money. a group of reporters has gotten ahold of 40 years worth of files from the computers of a law firm in panama that specializes in stashing money in shell companies offshore. don dahler take is a look. >> reporter: some of the names revealed in the documents are rogue's gallery of dictators and criminals. also included 12 world leaders allegedly evaded taxes in offshore accounts. the unprecedented leak had an immediate impact. in iceland the prime minister walked out of an interview after he was asked to explain how he and his wife used an offshore company to allegedly hide a $4 million investment. huge crowd gathered to day to demand his resignation.

in ukraine, while his country was at war, the leaked documents indicate, president petro poroshenko moved his business fortune to the british virgin island to avoid paying taxes. and british prime minister david cameron facing question as but his father's offshore investments. michael hudson among the recorders studying the documents for months. >> and the paperwork makes it clear that they wanted it structured in a way that the profits from these investments would not be taxed in the uk. a specialist, the leak reveals money laundering schemes, sanctions busting and other crimes. former treasury officer, chip poncy. >> every one of these devastating types of harms relies on financial support infrastructure that is often serviced by what you see in the panama papers. >> reporter: the documents show

how close associates of vladamir putin allegedly ran a multibillion dollar money laundering ring through bank rossiya subject to u.s. sanctions after russia annexed crimea. and syria's government circumvented sanctions using shell companies in the seychelles. in an interview with panamanian tv station, ramon fonseca said they have never been found guilty of anything in 40 years of business. we are a knife factory, he says, that sells knives. if the knife its used for a murder, we are not responsible. so far, no american politicians or come pans have been named. but there are other investigations already under way around the globe, scott. including australia, germany, the netherlands and france. >> awful this just beginning -- all of this just beginning. don dahler, thank you. brussels is flying again. there were 39 flights from the airport today. there are usually about 600. before the terrorist bombing two weeks ago.

isis bombers killed 32 at the airport. and a subway. today for the first time since the flood of refugees overwhelmed europe, the flow was reversed. more than 200 were sent home with more to follow. under a new deal between the european union and turkey. holly williams is following this. >> reporter: the migrants were bused into lesbos port before dawn and behind lines of riot police. each person being sent back had a chaperone. and we captured proof that their wrists were bound while on board the buses. the greek authorities said none of the migrants had aplid fplie asylum in europe. thousand of other people in greece at risk of deportation have fled war in syria and iraq. and they risked their lives to cross from turkey to greece in rickety boats and inflatable

rafts. greece's refugee camps have now become detention centers. fenced in behind razor wire, we met abdulrahman balash who told us he came from damascus in syria. and wants to go to germany or sweden where it is safe. but the greek police quickly intervened. he wants to speak to us, why can't we -- and then ended our interview. some migrants haven't been able to contain their frustration in recent days. several hundred people even managed to barack out of the detention center on the island of chias. >> if you are seeking asylum. you are not committing a crime. boris cheshirkov is a spokesman for the united nations refugee agency and fears that europe's determination to stop the migrants could mean that some are not given the protect thags deserve. >> they have to be given an individual process so they can

explain why they have to stay because they fear for their lives. >> reporter: the question now is whether locking migrants up and deporting some of them actually stops others from coming. there has been a drop in numbers in the last few days. but scott, this morning the greek government said that more than 300 people had arrived in the previous 24 hours. holly williams reporting for us tonight. holly, thank you. the death toll is growing from a drug that is more dangerous than heroin. >> and a storm out of season causes havoc. "cbs overnight news" will be right back. degree motionsense. the world's first antiperspirant with unique microcapsules activated by movement, that release bursts of freshness all day. motionsense. protection to keep you moving. degree. it won't let you down. and to keep thosew they fdarks from fading... there's woolite darks. it's free of harsh ingredients, keeping dark clothes looking like new for 30 washes

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doctors are sounding an alarm about an opioid that is so powerful one pill is enough to kill. john blackstone reports from sacramento. roipt embra >> reporter: she struggles to accept the recent death of her 2-year-old son jerome. >> the doctor said it was a drug overdose. i am looking at him like drug overdose. he went to explain it to me. it's the pill. the pill -- >> reporter: the pill that killed jerome butler father of three contained potent prescription pain reliever fentanyl. >> it shut down his organs. it shut down his kidneys.

it shut down his liver. his brain was swollen. the doctor said, said there was nothing he could do for him. >> reporter: all that from one pill. >> from one pill. from one pill. >> reporter: her son's death was one of ten in the sacramento area in 12 days. doctors have traced to fentanyl laced narcotics sold on the streets as generic opioids. >> this is not bathroom biochemistry very sophisticated. >> reporter: and deadly. >> absolutely. >> reporter: dr. timothy albertson is toxicologist at uc davis medical center. how powerful is fentanyl? >> 100 times more potent than the morphine. >> dea special agent john martin. >> coming from china, manufactured in china. shipped to mexico. mexican drug trafficicing organizations are struggling the fentanyl through smuggling routes through the southwest border. >> reporter: natasha butler

wants everyone to know pain kills bought on the street can kill. >> how many more are we going to lose? >> reporter: to imagine one small pill. in just six months last year, scott, nationwide, the dea seized enough illegal fentanyl to make more than 166 million doses of the drug. >> john blackstone in california's capital. john, thanks very much. a volcano puts on a spectacular show. we'll have that when we come back.

joe medicine crow was a u.s. and native american hero.

born on the crow reservation in montana, a great uncle told him firsthand, about the battle of the little big horn. in world war ii, medicine crow fought behind german lines. in one raid stole 50 german horses. he was awarded the presidential medal of free doidom in 2009. he died sunday, 102. a volcano 50 miles from mexico city has been rumbling. yesterday it blew, sending ash, rock and smoke more than a mile high. folks who live nearby have been warned they may have to evacuate. winter made a comeback today with freezing temperatures and snow in the northeast. driving was next to impossible in buffalo. with whiteout conditions. a tour bus carrying college students flipped in the adirondacks, but no serious injuries. two of baseball's opening day games were postponed. two wet in new york.

too cold in cleveland. up next, a court battle pitting,

the ncaa basketball championship will be decided tonight. the game between the university of north carolina and villanova will feature some serious sibling rivalry. manuel bojorquez is in houston. >> fires! >> reporter: the university of north carolina's nate britt and villanova's kris jenkins are brothers from other mothers literally. they met on the courts when they were 10 and quickly became friends. then in 2007, turmoil in kris' household forced birth mother

fleesh felicia to make a tough decision. >> it was hard at the time. but because i knew who i was sharing him with, i was able to sleep at night. >> you know he fit. it felt like, not that there was a piece missing. but it only added more to our family made our family that much better. >> reporter: the boys breathed basketball. they played on the same high school team in maryland. >> you know, to basically grow up and go through everything with a brother that he is going through the same workouts that you are, you know, doing everything together. so, it definitely makes it easier. >> reporter: and don't let this selfie fool you. they took it saturday night when they knew they were headed for the championship but haven't communicated since. mom melody britt had a shirt made showing she is rooting for two teams tonight. >> it's a win-win. villanova wins. we win. unc wins, we win. >> reporter: i can see the love

here. >> uh-huh. you have no idea. >> reporter: tonight no matter who wins the national title stays in the family. manuel bojorquez, cbs news, houston. that's the "cbs overnight news" for this tuesday. for some of you the news continues. for others check back with us a little bit later for the morning news and cbs this morning. from the broadcast center in new york city, i'm scott pelley.

>> announcer: this is the "overnight news" welcome to the "overnight news" i'm michelle miller. another important stop on the road to the white house. as wisconsin holds its primary. bernie sanders is trying to claw his way back into the democratic race against hillary clinton. polls show him with a two-point lead in wisconsin. for the republicans, ted cruz is out front with 43%. donald trump second with 37%. john kasich is third. major garrett has more. >> looking at our wisconsin poll, donald trump says he is tied with ted cruz. but that is statistical guess work against the combined get out the vote efforts of cruz and wisconsin governor scott walker. that's a harsh political reality. one trump tried to deal with yesterday by essentially apologizing for most of last

week. >> i don't know that they has been the worst week mine campaign. >> reporter: on tv and in print, donald trump did the unthinkable and unusual. he expressed regret. he told "the new york times" columnist maureen dowd that retweeting ted cruz's wife heidi was a mistake. >> was this my best week, i guess not. could have done without the retreat, et cetera. trump attempted to clarify comments he made about punishing women who seek abortions. >> well. as a hypothetical question i would have rather asked, answered it in a different manner, yeah. >> reporter: on face the nation, trump stated the obvious about where things stand. but searched for an answer about what abortion is. at this moment the laws are set. and i think we have to leave it that way. >> do you thing it is murder, abortion? >> um, i have my opinions on it. but i would rather not comment

on it. >> reporter: ted cruz quoted pundits opposed to abortion the who he said now rightly question trump's core beliefs. >> donald's answers are the answers of some one who is a liberal. trying to stay what he thinks conservatives want to hear. >> later sunday trump insist heed had been misunderstood. >> i took the answer. i didn't like it. a lot of people didn't understand it. will gone through a lot. they go through a tremendous punishment of themselves. i didn't like it because i wasn't sure people would understand it. so i clarified it. >> reporter: trump is battling to win wisconsin's 42 delegates. says john kasich running third is comb ply kagt the efforts. a -- complicating the efforts. >> kasich has more of an impact on me than he does on cruz in my opinion. >> the republican national committee has no power to remove any candidate from the race. and there was a time when trump liked all of the vigorous

competition. kasich for his part is now drawing fire in terms of tv ad and negative mailers from cruz. proof that kasich support while small could be pivotal here. for the democrats both bernie sanders and hillary clinton are already looking ahead to the new york primary in two weeks. and they are bickering about their next debate. nancy cordes reports. >> i'm not the one negotiating it. going on between our campaigns. i know my campaign has been really trying. >> the biggest argument between clinton and sanders this weekend wasn't wall street or health care it was about schedule a debate here in new york. >> doing it during the ncaa finals, whatever, makes no sense doing it in the morning. when people are not going to be watching in large numbers. makes no sense. sunday, the sanders campaign accused its rival of proposing a debate on a night he has a big rally. the clinton campaign said the sanders camp needs to stop with the games. accusing it of using fake excuses to attack her on the

issue. >> thank you all very much. wisconsin votes and both campaigns say sanders could rack up his fourth straight victory. the staying power means clinton has gotten hammered from the left longer than she expected. >> as secretary of state she actively supported fracking around the world. >> clinton argued sanders is distorting her record. >> i have been work iing to tryo move us away from fossil fuels many years. >> reporter: last year it wasn't republicans raising the fbi investigation into clinton's server, it was sander supporter and actress rosario dawson introducing him in the south bronx. >> yes, she is under fbi investigation, thank you. >> sanders defended dawson sunday but insisted he is staying away from the topic. >> a lot of people say bernie why don't you go after her on her fbi investigation? why don't you go after her on the clinton foundation money? we have chosen not to do that.

>> the clinton camp argues comments like that are his way of highlighting the topics without really talking about them. outrage is growing around the world as reporters pour through a massive release of sensitive documents called the panama papers. news organizations were e-mailed millions of documents purportedly detailing shady financial transactions of some of the world's richest people and most powerful politicians. in iceland for instance thousand protested, outside parliament, the demanding the country's prime minister resign. he has been linked to an offshore shell company allegedly involved in a massive tax evasion scam. he is not alone. don dahler has more. >> it's not illegal to have an offshore company. but one purpose of a so-called shell company is that money put it in it can't be traced to its owner. the practice allows people to hold cash and move cash under a corporate name without international law enforcement or tax authorities knowing who it

belongs to. an anonymous source provided nearly 40 years worth of documents from a law firm in panama, mossack fonesca that helps establish offshore accounts for the wealthiest people. 2.6 terabytes handed over to journalists reportedly contains 11.5 million documents. including 5 million internal e-mails providing a window into some 214,000 companies. >> this really told us something about how the offshore financial system works and who are the kind of people using it. michael hudson is one of hundreds of journalist whose researched the documents in likely the biggest leak of inside information in history. >> the same system that, that politicians and the mega wealthy and billionaires are using to move money and do transactions is being used by criminals, ponzi schemers, drug kingpins. you name it.

to hide their corrupt businesses. among the 12 current or former heads of state named in the investigations, the presidents of ukraine and argentina, and the king of saudi arabia. and while he is not named directly, the documents show allies to russian president vladamir putin secretly shuffled as much as $2 billion through banks and shadow companies. >> the prime minister of iceland who rose to prominence after the country's financial crisis walked out of an interview last month when skegs add but his ownership of a shell company that held nearly $4 million in bonds in the three major icelandic mix. >> secrecy is bought and sold. costs money. the more secrecy, the more you pay. mossack fonesca called the leak a crime and stressed to the french press that we have no responsibility in how the companies were used. >> they say they are like a car factory. you can't blame the car factory

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cyberthieves are stepping up their attacks infecting computers around the world with ransom ware, a malicious software that encrypts all your files. you can't get them back without paying a hefty ransom. demarco morgan reports on this growing threat. >> hackers are using ransomware to target consumers to businesses big and small to municipalities. the payoff is huge. we visited a city that fell victim to hackers and is still working to get its files back. plainfield, new jersey was taken hostage. >> the hijacker requested demanded a ransom. >> reporter: hackers infiltrated

their computers when an employee clicked on an infected link. city officials scrambled to pull servers offline. three were compromised leaving e-mails and city files inaccessible. >> we have ten years of documents that we are not able to access. >> reporter: the hijackers held the files ransom demanding roughly $650 in bit coin. and sought assistance from law ens for enforcement but is helpless. >> a problem cries out for the solution. >> reporter: plainfield a victim of ransomware, malware that security experts and law enforcement say is spreading nationwide. who should be concerned? >> everyone should be concerned. the number one issue facing the security. it is a very difficult thing to solve. >> reporter: the director of cybersecurity firm says the malware gets into people's computers often with a simple click. >> they prey on end-users

willingness to click on the latest viral videos, prey on people's willingness to click on facebook links, they're even spending spam through e-mail in addition to using twitter. >> reporter: once a computer is infected it encrypts all files or locks the user out until they pay for the key. you have a documents folder here. he demonstrated how it works. music folder here. i also have -- like everyone's computers, it is full of pictures. many cases people's family photos. then the malware takes hold. >> ransomware is communicating with the server. server sending instructions to encrypt files. >> reporter: within minutes the computer is compromised. >> this is what the end users see. the machine is part of the ransomware attack. >> photos. >> if i try to look at photos from last vacation. it is nothing. garbage. imagine an average business this happening in the background not

just on this computer but encrypting every computer in the network at the same time. in addition to a string of hospitals, the village in new york paid hundreds. and the police department in melrose, massachusetts, paid $500 to get back online. >> we are seeing an uptick in this type of activity. >> reporter: the head of the fbi's new york cyberdivision. >> one of the reasons our numbers are growing its because the idea that people are paying the ransom. >> reporter: in 2014 the fbi received more than 1,800 complaints about ransomware, estimated loss of $23 million. in 2015, the bureau received 2,400 complaints. victims loss over $24 million. >> just the cases being reported. we suspect there are many mr. that haven't been. ransom demands are relatively small. hundreds to a few thousand dollars. bought the loss to an individual or business can be huge. >> it is a very, very helpless feeling to open your computer

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national. jason day, jordan speith and rory mcilroy, are all in their 20s and speith is the defending champion. but they better keep an eye on number four, 37-year-old bubba watson. he has won two of the last four masters. watson sat done to discuss golf and his very quirky life with sharon alfonsi for "60 minutes." >> easy game, boys. >> easy game. >> reporter: bubba watson makes it look easy. at estancia, a private club in scottsdale, arizona he is playing a round with his wife, angie. his long-time tour caddie, ted scott, and his childhood friend, now his accountant, randall wells. >> good shot. >> reporter: a relaxed foursome with the trio of "60 minutes"

camera crews. trailing. >> go right there. love it. if it hits you. 190 miles an hour you won't feel it. >> reporter: this is bubba golf. a dash of juvenile. a dash of genius. and a full cup of cocky. >> oh, that's a par. >> come on. >> stay one up. >> reporter: are they allowed to beat you? >> they're allowed. they just can't. in ten years of playing golf with him and caddying for him, really only hit the ball bad a few times. i don't really know where that comes from. he is just a physical screenous when it comes to his aability -- genius when it comes to his ability. watson doesn't like the driving range. and hates talking about technique. he just plays. he its one of the longest hitters on tour. his drives with the playful pink club average 315 yard. he hardly ever hits the ball straight.

look at that curve. look at that ball curve. everything is a hook or a slice. a fade or a draw. what have you soon him do? >> pretty much everything possible on the golf course or that you thought might be impossible. fellow pro ricky fowler is also a close friend. >> it is pretty amazing what he can do. he is a freak. >> reporter: the best example of that freakish talent in one of the most famous shots in masters history. on the second hole of a playoff in 2012. watson's drive landed in the pine straw. >> when i hit in the woods. i was devastated the my shoulders went down. i was done. then i get over there when i walk done there i see the crowd has made a path so i could pull the shot off. a big hook. did it hook? oh, what a shot. >> how hard of a shot was that? >> it really is not that hard of

a shot for bubba. >> reporter: come on. >> hear me out. for bubba to hook a golf ball 40 yard that's not that hard to do. he does that for fun. if we were playing golf for fun. i would say good shot. i have seen him do the shot before. >> reporter: the shot in 2012 produce ad a two-putt par. [ cheers and applause ] and his first masters victory. angie had to watch from home with infant son caleb who they had adopted two weeks earlier. they were both there to see watson win his second green jacket two years later. [ applause ] they have since adopted a daughter, dakota. >> going to take the slope. could it be? >> he has won four tournaments in the last two years. >> how about that? >> he has climbed to numb bar four in the world. >> the legend is you never took a golf lesson. >> still haven't.

>> reporter: is that true? >> yeah. the physical game is easy. that sound bad. but it is easy to me. i can do that. i can hit it far. i can curve it. i got the shots. it is mentally being at that moment right then. >> reporter: how hard is it to control the mental stuff for you? >> it is getting better. again a process. learning process. i am getting better at it. >> reporter: doesn't always look that way. >> you are telling me that is the right yard. >> reporter: a few petulant outbursts have alienated a lot of people. in hartford in 2013, microphones picked him up criticizing ted scott for the 9 iron he recommended. all of a sudden everybody went, bubba watson is a jerk. >> well, so with me -- i got to get my anger out. not let it linger. just get it out. and teddy knows, teddy, he always jokes, ten second. give bubba ten seconds.

he is good. >> reporter: ten second for bubba but left a lasting impression with some fans. >> my wish is that people wouldn't just be quick to judge over that moment in hartford. i will say this on tv, about, i would say 80% of the guys bash their caddies verbally on the tour. >> reporter: 80%? >> guys labeled nicest guy on tour. bashing his caddie. it's pressure. you can't take it personally. if you are thin-skinned. you don't need to caddie. you will get it. part of the job. >> reporter: perhaps, when pga players were asked last year which of their fellow golfers they would be least likely to help in a fist fight. watson finished first. >> first time i heard this question, this poll came out was -- nobody wants to help bubba in a fight. everybody thinks i am tough, i like it. my caddie, teddy said that's not what they mean. >> reporter: you missed it, bud. >> that's what i am going with. he said people don't like you. the reason, teddy told me the reason they dent like you they don't understand you. because you are nuts.

>> reporter: were you surprised to hear that people didn't like you? >> no. >> reporter: bubba watson insists he is not trying to rub people the wrong way. it is just tough for him to be in his own skin sometimes. >> i have a lot of mental issues that i just am so fearful things, which i shouldn't be, right. scared of heights. scared of buildings falling on me. scared of dark. scared of crowds. those are my biggest issues. >> reporter: how do you reconcile that when you have to go out there and play golf with hundreds of people all around you? >> bubba! >> reporter: in between holes is really scary to me. because the there are so many people that close to you. >> reporter: scary? >> yes. >> reporter: what are you scared snuff. >> just cared of people. in general. >> he is scared of everything. everything. >> reporter: ted scott learned of bubba's fears the first time they worked together ten years ago. >> there was a 10-year-old kid who asked for his autograph out in the middle of nowhere. nobody knew who bubba was at the time. he was a rookie on tour. this kid walked up to him.

he kind of ignored him like he didn't see him. i thought, man what a jerk. as i got to know him. even that young kid coming up to him, as someone bubba doesn't know is a fearful situation for him. it sound crazy. but it is crazy because it is not our fear. >> reporter: he is legitimately feef f fearful. >> absolutely. >> reporter: that would be enough to deal with. watson's nerve endings seem to be closer to the surface than most people. >> do you see it? >> bubba notices everything. look over your right shoulder, a guy with a red shirt, blue cap. his phone underneath the thing. there are 3,000 people. i can't find him. no, right there, man. >> reporter: he did it with us in a break in our interview. >> when we are doing the interview do you hear them clicking a pen and tapping. >> reporter: do you? >> hear them all the time. can they hear them on microphone. this thing over here flickering. hear that? >> reporter: no. >> gosh. >> you can see the full story on our website, cbs news.com.

when the "cbs overnight news" returns. we'll introduce you to some,,

most serious golfers can only dream of playing the augusta national club. well some of the nation's youngest players got a treat. they were invited to test their skills before the pros tee off on thursday. mark strassmann took a look. >> reporter: these pros will have a tough act to follow after the national finals of the drive, chip, putt competition for some of golf's young masters. 7 years old playing augusta. remember many professional golfers will never set foot on this course. 80 young golf whizzes, boys and girls between 7-15 qualified in regional competitions for the chance to compete here in three events. they each hit two drives. two chip shots. and two putts.

yes, that's condoleezza rice in the green jacket, former secretary of state is a member here. check out the reaction. steven hernandez won among boys ages 7-9. the houston fourth grader has signature fist pump of a future masters champion. and the cool confidence. any nerves out there? >> not at all. >> reporter: because? >> because i like pressure. >> reporter: what do you like about it? >> the challenge of it. and people are like staring at you the whole way. >> reporter: you like that? >> yeah. >> beautiful grip. >> reporter: emerson blare is 9 years old. the ponytail pride of west point, mississippi beat all the girls in her age group. >> i was a little nervous. >> reporter: how did you get that under control? >> i took deep breaths. and said it was okay. >> reporter: watching emerson compete her mother sandy blare had to take deep breaths too. >> people saying, she is going

to win the i was like, no, no, no. i really lost it. i did. totally lost it. >> reporter: tears? >> yes. >> yes. >> go back and see what that looked like. >> steven robert hernandez. >> reporter: steven hernandez has a big trophy and he also knows what is really important. >> my sisters don't have what i have. >> when you go home are you going to run around and hold the trophy up high and say hooray for me? >> yeah. >> reporter: remember that name, steven hernandez. steven hernandez, he told me he will play in the masters one day. he will win it. he will do it when he is 20. tiger woods youngest masters winner was 21. >> cbs sports coverage of the masters begins this saturday at 3:00 p.m. eastern. you didn't want to miss a single swing. that does it for the "cbs overnight news" this tuesday. for some of you the news continues. for others check back with us a bit later for the morning news and "cbs this morning." from the broadcast center here in new york city, i'm michelle

it's tuesday, il it's tuesday, april 5th, 2016. this is "cbs morning news." gives it to jenkins for the championship. >> a spectacular finish to the ncaa tournament. villanova wins its first championship in more than 30 years on a dramatic buzzer-beating three-pointer. the badger state has turned into a battleground. voters in wisconsin could change the face of the presidential candidates for both parties today. and spring freeze. millions of americans get a chill as temperatures fall far