join us for abc 7 news at 5:00. welcome to "world news :00. tonight." breaking news. chaos on the strip. a gunman kills one then squares off against s.w.a.t. teams in las vegas. a section of the strip shut down. this just hours after the bellagio hotel is put on lockdown after armed burglars wearing masks attempt a major jewelry heist. also developing, brawls breaking out at a pro-trump rally in california. this as the white house re-groups after the devastating health care defeat. vice president pence announcing the war on obamacare is not over. details on president trump's next move. night strike. the tornado. dangerous winds and hail hitting in the middle of the night. this church destroyed. deadly crash landing. imagine coming home to this. a plane's nosedive blasting a

quiet neighborhood. the fiery explosion and what may have saved the homeowners. and assassin in action. tonight, the chilling new surveillance video showing the apparent execution of one of vladimir putin's fierce critics. and good evening. thanks for joining us. i'm tom llamas, and we begin tonight with that breaking news. the terrifying moments unfolding in las vegas. chaos on the strip. as we come on the air, parts of the strip shut down tonight. tourists sent scrambling. all of it sparked by a deadly shooting on a bus. the suspect barricading himself surrounded by police. hours after this at the bellagio hotel, at least three masked gunmen trying to rob a luxury store. casino-goers running for their lives. amid the chaos. abc's marci gonzalez is live on the strip with the details coming in. marci? >> reporter: tom, a normally

bustling las vegas strip you can see is shut down. still a very active investigation here as police try to figure out what prompted today's violence. >> we have one suspect down. >> reporter: tonight, a standoff on the las vegas strip. s.w.a.t. teams surrounding a gunman they say randomly shot two people on a bus, killing one of them. tourists watching it all unfold. this just hours after another a man in his 50s, police say, barricaded himself on board. >> it is an adult male. we do not believe this has any terror nexus to it. >> reporter: this just hours after another tense scene that triggered a lockdown at one of the trip's famed casinos. armed and disguised in animal masks -- >> possible masked shooter in a zebra mask. >> reporter: suspects seen in this video posted on youtube carried out a high end heist inside this jewelry store at the bellagio.

>> i noticed a person in a pig mask, and it noticed it looked like he was holding something long and black in one hand, and i notice he was holding what looked like a gun in the other hand. >> reporter: the thieves using sledgehammers to smash into the rolex store just before 1:00 this morning. police say no one was hurt, but wouldn't reveal just how much the criminals imagined to get away with p. >> they attempted to flee in a vehicle. that failed to start for them. they tried to carjack another vehicle, and that didn't go so well. they eventually fled on foot. >> reporter: police making one arrest saying they are on their way to tracking down the other suspects. >> we know one person was killed in the standoff student. what is the latest with it? >> reporter: we're told the second victim suffered nonlife threatening injuries and we got an update. the suspect was taken into custody without incident, and they have no reason to believe, that the two incidents, the heist overnight and shooting today have any connection. tom? >> marci gonzalez on las vegas

strip that looks like a ghost town. all right, marci, thank you. we want to turn now to the new pictures coming in from california. violence breaking out at a pro trump rally in huntington beach. punches thrown in various forms. all-out brawls. police say a march of about 2,000 trump supporters clashed with dozens of anti-trump forces. they say anti-trump protesters sparked the incident when they pepper sprayed marchers. three people so far have been arrested. emotions are running high after the colossal defeat health care bill. the president re-grouping after failing to repeal and replace the affordable care act. the president and his team re-grouping after failing to replace the affordable care act as promised in his campaign. failing to galvanize the republican majority in the house. mike pence spoke to business owners today in west virginia, saying the victory of obamacare won't last long. abc's david wright at the white

house tonight. >> reporter: with the gop health plan in tatters, president trump sought to reassure his supporters that all is not lost. tweeting, obamacare will explode, and we will all get together and piece together a great health care plan for the people. do not worry. vice president pence brought much the same message to coal country. >> we will end the obamacare nightmare and give the american people the world class health care that they deserve. >> reporter: millions of voters who got coverage under obamacare are worried. >> it's not a perfect plan, but i'm grateful to have what i do have. >> reporter: a sentiment shared even by some trump supporters. abc news recently met mike taylor, a trump supporter for whom keeping obamacare was a life or death issue. >> what's worrying you? >> if they do away with this, the insurance, they need to -- i think, they need to reform it. >> reporter: today, he still supports trump, but he is thankful obamacare survives. >> i'm glad they voted the way they did. can't build a mansion overnight. maybe they will get together and

resolve it to where it still helps us. >> reporter: whether or not obamacare now explodes depends partly on trump according to andy slavitt who helped president obama implement the affordable care act. >> it's completely within the power of the administration right now to decide how successful this law is, and if it fails, it's going to fail because they decided to let it fail. >> reporter: during the campaign, trump promised this would be easy. >> you are going to have such great health care at a tiny fraction of the cost, and it's going to be so easy. >> reporter: only to get a serious reality check once in office. >> health care is a very, very difficult subject. it's a very complex subject, and it's a subject that, you know, goes both ways. >> reporter: now the administration is cutting its losses and moving on to tax reform. >> working with this congress, president trump is going to pass the largest tax cut since the days of ronald reagan.

>> the white house now promising tax reform. david joins us from the white house. the trump administration has had trouble with their travel ban, and now health care, and it looks like tax reform won't be any easier. >> reporter: not at all. here's why. every special interest that currently enjoys a tax loophole and every interest that wants one, they will be lobbying their members of the congress, and that's why we haven't had tax reform in more than 30 years. >> david, thanks so much. much more on this tomorrow on "this week" when george goes one-on-one with senate minority leader, chuck schumer and freedom caucus chair, mark meadows. next tot fiery crash landing shattering the quiet on a residential street in georgia. a small plane spiraling out of control, slamming down into a yard and erupting into flames, killing the pilot on board. why the family escaped injury, abc's eva pilgrim reports. >> reporter: tonight, the fiery plane crash under investigation. >> my house is on fire. >> reporter: a home engulfed in an inferno. >> plane crash!

>> a plane just crashed. >> reporter: the atlanta suburb rocked by the explosion. >> we do have a column of smoke in the area. >> reporter: the plane slamming into the lawn of this moment, killing the pilot. >> i looked back up and i saw the plane spiraling out of the control, and it started taking a nosedive and spiraling down. >> there is a house fire resulting from an aircraft crash. >> reporter: the plane took off from cincinnati and according to air traffic control audio from the cockpit, there was a problem with the autopilot. >> we'll be looking at that and seeing if it was a factor. >> reporter: the family who lives here, thankfully not home. at church at the time of the crash, telling neighbors they were saved. >> by the grace of god. that's how he put it. >> reporter: there were roughly 135 small plane crashes a year. that's about ten a month. many due to losing control of the aircraft. tonight, ntsb investigators poring through the mangled wreckage of the crash site. as you can see, they are moving the plane as they continue to pinpoint exactly what happened, saying they will research both

the pilot and the plane's histories, tom. >> eva, thanks so much. now the severe weather pushing east. the cleanup under way after a tornado blue throuew through ar north of little rock. winds damaging the church, stunning the faithful outside of louisiana. here's abc's phillip mena. >> reporter: tonight, destruction in the south. as a new threat takes aim at tornado alley. >> it was there. >> reporter: in ringgold, louisiana, pastor martha griggs' church of nearly 40 years destroyed by extreme wind overnight. >> it brought me to tears. >> reporter: the roof and cinder block blown down. bibles scattered in the debris. >> i'm thankful there was no one in the building. no one got hurt. >> reporter: that same line of storms spawning an ef-2 tornado in arkansas. >> there was a frame there a mobile home that was blown off. >> reporter: the twister on the ground for less than a minute, but flipping this mobile home. the bottom gone, and this home's ceiling caved in.

the night's storm making it dangerous for drivers in bentley, kansas. pelted by hail up to the size of golf balls. tom, this church is a total loss, but sunday worship will go on. the pastor here telling us she will hold services at her home nearby until a new church can be built, tom. >> that hail and those swinwind devastating. all right, phil. thanks so much. senior meteorologist rob marciano joins us with the forecast. we're talking about a possible tornado threat? >> reporter: a couple of rounds of them. storms are firing tonight, and not a lot of damage, but they are going on east of new orleans up through nashville. you will see the wide expanse, but we're in this active, amplified pattern, and the rockies gets into the plains and we have a higher threat for severe weather. oklahoma city, almost down to dallas, and tornadoes will be a risk there. dangerous situation into monday into the mississippi towns including memphis and greenville, and advance of this storm, we're looking for springlike temperatures across

the east, and still shots of cold air in boston and d.c., so keep your coat handy. >> 40s still in new york. all right, rob. thanks so much. now we're going to head overseas to the disturbing images emerging from ukraine. the surveillance video appearing to show the assassination of a vocal critic of russian president vladimir putin. it's the latest of a series of deadly incidents raising new questions tonight. abc's ron claiborne tracking this for us. >> reporter: in this chilling newly released vote, the russian defector can be seen walking down the street. that's denis voronenkov. his bodyguard on his left. watch as a man approaches from behind. steps up to voronenkov, and shoots him. the bodyguard charges the attacker. as the victim lay on the ground, his body can be seen firing at the fleeing assailant, fatally wounding him. but voronenkov was dead on the street in the ukrainian capitol, and officials there immediately blamed russia calling the murder an act of state terrorism. voronenkov, a member of the russian parliament, fled to

ukraine last fall while under investigation for corruption. he became a person to vocally speak out against president putin. over the years, a number of putin critics have been murdered. he had given several interviews saying his life was in danger. two years ago, boris nemtsov, a prominent politician, gunned down near the kremlin. and in 2006, alexander litvinenko was poisoned. his murderer was carrying a passport, but people say russia ordered the hit to silence him. a spokesman for putin says he hopes that an ukrainian investigator is able to solve the murder, and mr. putin invited the victim's widow to return to russia. a spokesman for vladimir putin says he hopes the investigators are able to solve the murder, he invited the widow to return to russia, tom. >> we'll see if she accepts that invitation. thanks so much. now to the u.s. military tonight admitting it launched an

air strike in iraq that killed scores of civilians. the u.s. saying iraqi security forces requested the air strike on isis targets in mosul on march 17th, and they did not confirm casualty numbers, but the military investigating multiple claims, scores of civilians were killed. we're learning more about the final moments of the man accused in the horrific attack in london. details coming out on the suspects a alleged ties to saudi arabia. and questions intensifying on whether he worked alone. abc's jennifer eccleston with the latest from our london bureau. >> reporter: new video of the attacker moments after his deadly rampage. police rush to the policeman fatally stabbed. the killer already shot down, surrounded. the gates into britain's parliament open, unguarded. tonight, investigators are racing to unravel khalid masood's past. saudi arabia confirming masood was in their country three times since 2005. stressing he was not on a terror or criminal watch list.

british media reporting the 52-year-old used the whatsapp messaging service two minutes before the terror unfolded. just who was he communicating with? not known. the british muslim convert was born adrian russell adjao. spending time in prison for assault and investigated for links with extremists more than a decade ago. he was determined low risk. tonight, police have one man in custody. ten others have been arrested and released since wednesday's rampage and police will be searching computer files seized for any indication that the perpetrator received support, encouragement or directions to carry out the attack. >> jennifer, thank you. there is much more on "world news tonight" this saturday. the cash of a self-driving uber suv. who was at fault? man or machine? the major announcement from uber following the accident. plus a potential alternative to rising health insurance premiums.

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police think is the elusive incognito bandit. the mass robber hitting 16 banks in the boston area over two years. the fbi tracking him down to an airport, nabbing him before he could get on a flight to south africa. a police officer lucky to escape injury after a run-in with a cow. the cow ran into a fenced in area, and he got out of his car, trying to close the gate. the cow didn't like that, and the cow charged at the officer. the brave officer took off running and that cow is aprntly on the loose. a human to the rescue of a shark in florida. the lemon shark swimming up to the diver, and it had a hook in its stomach. after the diver pulled it out, the shark kept coming back. the diver thinks it was thanking him. pretty cool. a life-saving operation for a little boy coming all the way from kosovo all thanks to

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finally tonight, a little boy from kosovo in new york for surgery. in addition to his doctors, his family thanking a group of american high schoolers. >> reporter: with that smile, that energy and that laugh, it's hard not to like 6-year-old erblin. this little guy from kosovo is happy because he is learning first hand the generosity of americans. he was born with a life-threatening congenital heart defect that led to chronic fatigue. he needed heart surgery. his father ran out of options. >> i was terrified and scared, while i was in kosovo that he will die. >> reporter: but a group of high school students from long island heard about erblin's problem, got together and with a program

called gift of life, they raised thousands of dollars to fly him over to fix his heart. >> before the surgery, we were able to meet him and he was so adorable. >> reporter: but these students didn't just raise money. they sat in on the surgery. all of them with dreams of being a doctor just like the surgeon who patched him up. it was only a 35-minute procedure, but it was life-changing. >> i was tired. now i feel good. >> reporter: and so do those students. not doctors yet, but already saving one life. >> this is, like, truly a day i will never, ever forget. >> reporter: he now heads back to kosovo. his heart feels better, but not as good as his stomach because this was his favorite part about america. >> i like the food. [ laughter ] >> spoken like a true 6-year-old. "gma" and "this week" in the morning. i'll see you right back here tomorrow night. good night. morning. i'll see you right back here tomorrow night. good night.

tonight at 6:00, health care remains a hot topic with bay area lawmakers. >> passionate fans rally for the silver and black and the oakland's plan to keep the team. and a big day for b.a.r.t. the next step for connecting the east bay to san jose. abc 7 news at 6:00 starts now. hundreds of people attend town hall meetings across the bay area. most of the time spent talking about health care and the failed republican plan. good evening, i'm eric thomas. thanks for joining us. after the failed vote, republican leaders say they will wait for rising costs to cripple the affordable care act. meantime democratic lawmakers return to the bay area to a warm welcome. we are live in san francisco with more. hey, lisa. >> reporter: hi, eric. it was a packed meeting here at

balboa high school. 900 people were inside of the auditorium behind me. >> with whom i'm honored to share representation of the city of -- >> nancy pelosi and jackie spear got a warm welcome from constituents. they spent the majority of the two and a half hour long town hall talking about the affordable care act and the fact that paul ryan pulled the reform proposal off the floor before a vote could be taken. the two democrats applauded the move but blamed out spoken republicans as well as the president for making false promises and not uniting the country. >> they could do it on the 7th anniversary of the affordable care act and they didn't have their act together. they didn't build their consensus in the congress and they lost. >> he is not a good negotiator. two he is not a good closer.