job, kids. >> thanks for joining us here at 5:00 5:00, lester holt joins us next. >> have a good night. on this tuesday night, isis in america? for the first time, isis claims responsibility for an attack on u.s. soil, praising the two american gunmen and warning of more attacks to come. bank outrage. troubling allegations against one of the largest banks in the country, accused of opening accounts that customers never asked for and sticking them with fees they never authorized. what's in your food? why certain ingredients are quickly disappearing from menus all across the country. and streaming live, any time, anywhere, it's how so many watched the richest fight in history for free. is someone watching you? "nightly news" begins right now.

from nbc news world headquarters in new york this is "nbc nightly news." reporting tonight, lester holt. good evening. a claim today by isis that it had a hand in the shooting attack on an anti-islamist gathering in texas atcheted up concerns about isis in this country and its potential reach. it's the first time islamic state has tried to claim credit for an attack on american soil. the white house today labeled it an attempted terrorist act, but it dismissed the isis claim itself. it may, however, be a fine distinction, as there are indications the shooters, who were both killed, were inspired by isis to go on the attack. we have two reports, beginning with our justice correspondent, pete williams. >> reporter: in radio and internet messages, isis claimed the two gunmen from phoenix, nadir soofi and elton simpson, were "soldiers of the caliphate," or islamic state, and "that worse things are coming." u.s. officials call it an attempt to claim credit and say there's

nothing to show isis actually planned or directed the plot. they say simpson used several social media accounts and expressed his support for isis, tweeting, "may allah accept us as mujahideen" before the two men started firing in texas. officials say this latest plot is part of an alarming new trend with isis shifting away from propaganda aimed at a mass audience and instead calling for action directly on social media. one official said it's like someone repeatedly tapping you on the shoulder asking, when are you going to do something? it's even more powerful now, with so many westerners in isis contacting friends back home. >> they are trying to, you know, egg somebody on potentially doing an attack back in their homeland for those that are still back in the home. >> reporter: investigators say several thousand people in the u.s. trade messages on isis social media, a number impossible to track individually. and trying to shut down every isis social media account is hopeless. the answer, many say, is more people putting out an opposing message online.

>> i believe a counterideology or a counternarrative to the isis radical ideology could be successful, but it has to be grassroots. >> reporter: investigators have yet to determine when the attack plan was formed. they say simpson's social media postings did attract attention from police and the fbi last month, but they say he was never explicit about any attack plans and was not under constant surveillance. pete williams, nbc news, boston. >> reporter: i'm miguel almaguer in phoenix at the apartment of elton simpson and nadir soofi, where federal investigators have been searching for clues. >> the police and homeland security and fbi, we knew something serious was going on. >> reporter: soofi's family is looking for answers, too. he was born in the u.s., a father to a young son. >> it never entered my mind that anybody i knew would even do something like that, much less someone in the family. >> reporter: he spent time in pakistan as a child. classmates tell nbc

news he was popular and used to be called goofy because of his laid-back attitude. said to be a heartthrob, soofi starred in the play "bye bye, birdie." friends say he came from a privileged family but became more isolated in recent years. he was a devout muslim, like elton simpson. usama shami is the president of the mosque simpson attended regularly until about four years ago. >> a very good demeanor. very good attitude. always a smile on his face. >> reporter: simpson caught the fbi's attention nearly a decade ago. in 2010, he was investigated for planning to join a terror group in somalia, but he was convicted of lying to a federal agent and placed on probation. >> he just seemed very calm and quiet and, um, i really had believed that the charges against him were trumped up. >> reporter: in a statement, simpson's family says they are struggling to understand how he could become radicalized, writing, "we are sure many people in the country

are curious to know if we had any idea of elton's plan. to that we say, without question, we did not." neighbors say the two men lived in the apartment complex behind me together for years. law enforcement sources say the guns used in sunday's shooting were purchased legally. lester? >> miguel almaguer tonight, thank you. in baltimore today, where emotions are still raw over the death of freddie gray and the violence that followed, new attorney general, loretta lynch, made her first public official trip since assuming office last week. she met with gray's family, community leaders and police days after six officers were charged in connection to gray's death. an attorney for one of those officers, meantime, filed a motion claiming the knife gray allegedly had on him at the time of his arrest was illegal, despite prosecutors' claim to the contrary. one of the nation's biggest banks is under fire tonight. wells fargo accused of committing fraud against its own customers. employees allegedly opening accounts that customers never asked

for, then charging them fees and damaging their credit. nbc's anne thompson has this report. >> reporter: a bank is a place to put your money and trust. franklin on says what he got in return at wells fargo is frustration. >> i only needed for my businesses two accounts, and they opened over 15 accounts for me. >> reporter: many accounts, on said, were opened without his approval, earning fees for the bank and endless headaches for this los angeles small business owner. >> they opened personal accounts, checking accounts for me, then savings accounts on top of those, then -- it is just, oh, man, it was a mess. >> reporter: these high-pressure tactics to meet sales quotas are the heart of the lawsuit filed this week by the city of los angeles against wells fargo. >> wells' customers have been victimized by tactics designed to maintain high levels of sales of wells' products. >> reporter: the suit accuses wells fargo of creating a virtual fee-generating machine, hounding family and friends

to open extra accounts using confidential customer information to open credit cards and other accounts and damaging customers' credit reports when the unauthorized fees were not paid. wells fargo is the nation's fourth largest bank, with more than 6100 branches across the country, just over 1,000 in california alone. wells fargo says it will vigorously defend itself against the charges. its culture, it says, is focused on the best interest of its customers and creating a supportive, caring and ethical environment for its team members. for customers like franklin on, experts say carefully monitor your bank activity off and online and pay attention to your credit reports. anne thompson, nbc news, new york. former arkansas governor mike ng huckabee today became the sixth republican to officially jump in the race for president, with strong support from evangelical conservatives.

huckabee won eight stays in the the 2008 republican primaries. today, he announced his second run for president in his hometown of hope, arkansas, which is also the birthplace of former president bill clinton. meantime, the clinton campaign is working overtime tonight to hit back at allegations being made in a highly anticipated new book out today called "clinton cash," about her family foundation, her money and where it all came from. nbc's andrea mitchell is on the trail in las vegas. >> reporter: hillary clinton courting hispanic voters at a las vegas high school today, while her campaign launched a counteroffensive, a new website, a twitter account and a campaign video. >> the book is already being debunked far and wide. >> reporter: a war of words with the author of "clinton cash," leaked in advance but officially published today. >> i'm not saying, andrea, that there was a quid pro quo, but what i am saying is you see a pattern of behavior, funds flow in either through the cycstic fibrosis or through the form of speaking fee ss, and there is a policy decision that tends to favor the recipient. >> full of sloppy

research and attacks pulled out of thin air with no actual evidence. >> reporter: and part of the rebuttal, an appeal for campaign money, raising cash from controversy. bill clinton strongly defended his wife in his exclusive interview with cynthia mcfadden. >> not a single, solitary fact has been introduced that she has done anything wrong. people should live to be as honest as she is. >> reporter: but when that other former arkansas governor, republican mike huckabee, announced he was running for president today, he did it with a dig at clinton. >> i don't have a global foundation or a taxpayer-funded paycheck to live off of. >> reporter: the pounding is taking its toll. her numbers in our new nbc news/"wall street journal" poll have gone down on trust and honesty. 25%. only 25% think she is trustworthy. >> that's part of why we have got to answer back and show people what really are the facts. >> reporter: but clinton's polls are holding up against potential republicans. she remains ahead of all of them. the democratic party announced today it will hold six primary debates.

hillary clinton tweeted she looks forward to a real conversation, but so far, not about money. lester? >> andrea mitchell tonight, thank you. overseas tonight, a major humanitarian crisis unfolding in the mediterranean. a flood of migrants from northern africa fleeing war and hardship, desperate to reach europe. it is an extraordinarily dangerous journey. last month, 800 people drowned when their ship capsized. in just the past three days, 7,000 migrants have been rescued at sea. one rescue south of sicily was captured on video. nbc's bill neely has the story. >> reporter: the sea is calm, the migrants are not, desperate for rescue by a passing cargo ship, they scramble for life preservers and try to climb a rope. easy, shout the crew, but they are panicking. some jump, many can't swim. their dingy is taking on water. a woman and child look anxious. some from their boat drowned earlier, another like it sank

at sea. but these africans are lucky, one by one, climbing to safety. and just in time. the dinghy is about to sink. the dead are removed. it's happening every day. >> we are facing one of the major humanitarian crises of our time. mediterranean is being turned into a mass grave. >> reporter: europe's leaders promise more help. an american saves lives with his own boat. >> we have 12 pregnant women, over 60 women and 40 children. >> reporter: a baby girl was born on one rescue ship. another boat sped back to libya, its migrants sent home. >> we are suffering! can't you see we are suffering? >> reporter: many are drowning for a chance of freedom and a wave of migration europe can't stop. bill neely, nbc news, london. a potentially very dangerous night ahead in the southern plains with at least one tornado touching down in west texas and the threat of more over the course of the evening, as severe thunderstorms also

bring the risk of large hail and damaging wind gusts. and we are also keeping a close eye on the southeast, where an area of low pressure in the atlantic could form a tropical storm over the next few days impacting florida and the carolinas. we will keep an eye on it. some major changes are coming to a chain where many of us eat every week, as customer trends show we are concerned -- more and more concerned with what's in our food. panera bread announced it's changing at least 150 ingredients to get rid of additives many probably didn't realize they were eating. nbc's halley jackson has the details. >> reporter: panera bread is cooking up a new menu, making headlines not for what it's adding, but what it's removing, dozens of artificial preservatives, sweeteners and flavors, including some fda-approved additives also found in pesticides, petroleum wax and perfume. >> what we are attempting to do for consumers here is give them a comprehensive, transparent list that gives them clarity and allows them to feel

confident in their choice. >> reporter: panera is one of many companies catering to the health conscious, like nestle, which is getting rid of fake flavors and colors in some candy bars, and kraft, transitioning to natural spices instead of synthetics in mac and cheese. >> it's great that companies are responsive to what people say they want. whether they will purchase this based on changing tastes and texture and appearance remains to be seen. >> reporter: some food safety advocates say panera's moves are more about public relations than public health, arguing just because something's artificial doesn't make it unsafe. >> there's a lot of scary stuff on here. does this say glycerol esther of wood rosin? >> reporter: but gia says she feels better knowing what she is and is not feeding her family. >> it just makes it easier that i can walk into a place and i don't have to think about it. >> reporter: for panera, a new menu to reflect changing tastes.

halley jackson, nbc news, los angeles. still ahead tonight, periscope and all the ways to live stream your life. i'm doing it right now. if you want to see what's going on behind the scenes during a commercial break, but there's other big concerns that go along with it and we'll take a look at those when we come back. later, a young girl surrounded by violence and heartbreak half a world away and a "nightly news" viewer who saw her story on this broadcast, then did something amazing to change her life. we will be back.

tonight, we are taking a closer look at something that

happened over the weekend that may prove to be one of those critical moments when technology suddenly upends the world as we know it, in this case, the world of entertainment and sports. the event was the richest boxing match of all time in las vegas which millions of people paid big money to watch on tv, but it turns out a lot of people saw it for free, thanks to new technology that is raising a whole host of concerns. nbc's tom costello takes a look. >> reporter: if the mayweather/pacquiao match didn't quite live up to its billing, it may have touched off a different fight of the century in cyberspace. while pay-per-view customers paid $100 each to view the fight, at least 66 people live streamed it over periscope, for thousands, perhaps more to watch illegally for free. the ceo of twitter, periscope's parent company, declared periscope was the real winner. at any moment, periscope offers a smorgasbord of live feeds to choose from, public and private moments. a concert in london, a family at a petting

zoo, a man playing piano at home. ♪ from the mundane to the scandalous, it's now possible to live stream to a global audience, but that opens up a world of privacy and legal issues. live streaming movies, tv shows or pay-per-view events, very often a copyright violation. >> the fact is it takes money to create content, it takes money to produce a fight, a major live event like that. you can expect that people will want to protect the exclusive agreements they have with broadcast companies. >> reporter: hbo is already warning periscope users to stop pirating its programming, while professional sports and the national association of theater owners all ban live streaming. kurt wagner covers social media for nbc partner, re/code. >> i don't think we know as a society what is appropriate and what's inappropriate and it is only gonna happen over time. >> reporter: after the ceo first boasted that

periscope was the real winner on saturday, the company today said, "we respect intellectual property rights and is working to take down copyrighted content." new technology opening a pandora's box filled with legal and privacy issues. tom costello, nbc news, washington. >> and if you've been watching our periscope feed, we are going to turn it off now and direct you back to the tv. we are back in a moment with u2 performing again in the u.s., months after bono's devastating accident, but they weren't on any stage.

[ rapping ] who could forget that unforgettable rendition of "rapper's delight," in "the wedding singer"? ellen albertini dow, the rapping granny, has died. she didn't even start her acting career until she was in her 70s, often cast in feisty, foul-mouthed roles in movies like "the wedding singer" and "road trip." she also appeared on tv shows including "the golden girls" and "seinfeld."

ellen albertini dow was 101 years old. queen elizabeth met her new great granddaughter for the first time today, paying a visit to kensington palace to meet charlotte elizabeth diana. and here's something you don't see every day. when william filled out the birth registry today in the blanks for parents' occupations, what do you think he wrote? "prince and princess of the united kingdom." a rare treat for subway riders in new york realizing a band playing u2 songs on one of the platforms was actually u2. the impromptu concert is one of the band's first performances since bono had a terrible cycling accident which he is still recovering from. also spotted on the platform, nbc's jimmy fallon, so this may have something to do with u2's "tonight show" appearance coming up this friday. when he come back, the girl orphaned by war whose life couldn't be more different than when we met her last year.

we want to end tonight with a heartwarming update about a little girl our nbc news team first met last year while covering a conflict that had nearly a million people on the run from their homes. so many were touched by her story, but one of our viewers in particular took it upon himself to make a difference in her life. here's ann curry. >> reporter: the

weight of war fell on chekina without mercy. we found her alone in a monastery in the central african republic last year, where hundreds had fled rising ethnic violence. chekina had tried to save her family with prayer, telling us, "i lifted my hands to god, but they didn't hear me. they took away my dad and mother and killed them." her entire family was killed. still, at just 8 years old, she asked god to forgive them. in america, greg daniel happened to be watching our report. >> it literally brought tears to my eyes. >> reporter: a successful doctor in buffalo, new york, divorced with four children, dr. daniel realized he could offer chekina a new life. >> i said, you know, in life, we see a lot of terrible things, but how often do we actually act upon it? >> reporter: he traveled to africa twice, went through months of red tape and prayed. finally, in february,

after more than a year, chekina arrived in america to an adopted family. >> i can't wait to get to know her and experience new things with her. >> reporter: today, chekina lives in a beautiful home with her own room. she loves going to school again and though she misses people a world away -- language ] is delighting her. she is now a fan of selfies, lady gaga, and most of all, the movie "frozen." ♪ let it go, let it go ♪ ♪ >> that was so good. that was really -- what do you mean i'm no good? you are good. that was great. >> no good. >> no, it was great. >> reporter: because one american opened his heart, the joy of kindness now lifts chekina without limits. ann curry for nbc news, buffalo. >> so, so glad that ann followed up on chekina's story. we wish her all the

best. that's going to do it for us on this tuesday night. i'm lester holt. for all of us at nbc news, thank you for watching and good night. . right now at 6:00 bold but necessary. tonight, the state on the verge of laying down the law when it comes to the water conservation. good evening and thanks for joining us. i'm jessica aguirre. >> and i'm raj mathai. today, state water regulators say we didn't conserve enough water in the month of march, less than 4% and that's likely to prompt strict new restrictions. the meeting right now is happening. the state water leaders have been at it for nine straight hours. at issue here how much each california city will be asked to

cut back. nbc bay area's marianne favro is in san jose. when would these cutbacks again? >> reporter: if approved it would require some bay area cities to cut back as much as 36% and in addition to that the new regulations would ban cities from watering medians like this one. tonight, state water regulators are on the verge of adopting emergency regulations to make sure we achieve the mandatory 25% water usage cuts governor jerry brown ordered last month. if approved hillsborough will be one of several communities to cut back the most a whopping 36% from 2013 levels. morgan hill would need to conserve 28% and contra costa water district 28%. san jose water company, 20%.