ght now. >> announcer: from nbc news world headquarters in new york, this is "nbc nighghy news" with lester holt. good evening. it's often said that words matter, and tonight it's donald trump's words under scrutiny as part of a criminal investigation by sheriffs officials in north carolina. nbc news has confirmed that authorities are looking at whether trump or his campaign incited a supporter to attack a protester at a rally in cumberland county last week. violent clashes between trump supporters and protesters have become more frequent, reaching a new level on friday night in chicago when bloody fights broke out after a trump rally was abruptly cancelled. let's start tonight with nbc's katy tur. >> reporter: donald trump facing an investigation tonight as a north carolina sheriff's office confirms it is looking at whether statements made by the candidate constituted inciting a riot after an

was sucker punched at a rally by a trump supporter in fayetteville last week. the attacker, a 78-year-old white man, also threatened to kill the protester. >> the next time we see him, we might have to kill hihi >> reporter: trump telling nbc news he's considering legal help for the attacker. >> i've actually instructed my people to look into it, yes. >> repepter: temperature surrounding trump's campaign only getting hotter. >> hey, hey, ho, ho, racist trump has got to go. >> reporter: anger outside trump rallies. boiling over inside. trump firir up. >> get them out of here. >> and his surrogates spoiling for fight. >> we don't have time for is all that petty, punk thuggary stuff that's been going on with these quote, unquote protesters. >> reporter: all of the unease today coming on the heels of

e weekend in chicago along with nth semitism in cleveland and police clashes in kansas city. trump supporters are under deterred. >> politicians that have been elected have forgotten who got us there. >> reporter: campaign trail hot under the collar. a microcosm of the electorate. c news latest exit polling for the most recent primaries shows trump voters are angry with washington, feel betrayed by the republican party and want the next president to be an outsider. >> whenever there is a momentntn the campaign whereee's either falling out of the headlines or the headlines aren't quite as favorable to him, he's always able to stir up some kind of controversy to keep his name back in the news. >> reporter: the trump campaign just responded to the cumberland county sheriffs saying the fayetteville arere was rented by the campaign and paid for by the campaign for a private event and that the protesesrs were just there to agitate. lester. >> katy tur, thank you. trump is rallying

in ohio on the eve of what is shaping up to be another super tuesday. winning ohio is key to trump's breakout strategy, but ohio governor john kasich also rallying there tonight leads the polls in his home state and is positioned to keep the republican race in play. while the democrats in a battle of their own are nonetheless focused on donald trump. we've got all ses covered beginning with nbc's peter alexander. peter? >> reporter: lester, good evening to you. ohio governor john case sick still looking for his first win in more than two dozen tries this campaign. his approval rating in his home state among ohio republicans is close to 80%, but he'll need to translate doo into a victory tomorrow night to stay alive and to slow donald trump's trajectory towards the nomination. it's march madness for republicans. >> the people that are supporters of donald trump want to see america be great again. that's what it is. >> reporter: on team trump, chris christie and sarah palin who is now heading back to alaska. her husband todd

>> thank you, guys, for prayers for my husband. >> reporter: here in battleground ohio governor john kasich with 2012 nominee mitt romney. >> ununke the other people running he has a real track record. >> reporter: trump trouncing the competition in florida, marco rubio's home state. and in the bucucye state case sick clinging to a small load and has never lost an election here. why is it still neck and neck with donald trump here? >> i don't think it' neck and neck. i think we're ahead and we're going to win. >> reporter: his challenge to prove he's not just popular, viable. >> a lot of people don't want to waste their votes and don't wanto cast their vote for somebody who can't win. >> reporter: ted cruz taki a swipe at trump's bluster. >> if he were, for example, to go out on fest avenue and shoot somebody i would not be willing to support donald trump. >> reporter: out today an anti-trump ad highlighting his dis-berridging comments about women. >> bimbo. >> dog. >> fat pig. >> real quotes from donald trump. >> reporter: but it's

if trump sweeps florida and ohio, he'll extend his commanding lead but if he loses ohio he has to win 60% of the remaining delegates to clinch the republican nomination. peter alexander, nbc news, westerville, ohio. >> reporter: i'm kasie hunt. democrats unleashing on donald trump today at an msnbc town hall. >> when you are inciting mob violence which is w wt trump is doing, people remember mob violence that led to lynchings. >> this guy is a pathological liar. it's very hard to fact-check him because he never has any fafas. >> reporter: sanders' criticism, part of a calculated strategy after the republican front-runner started name-checking sanders at rally. >> bernie, our communist friend. >> b bnie sanders is the strongest candidate in the general election against drew. think hillary clinton has a number of flaws as a candidate which frump will be able to exemployed. >> reporter: sanders and clinton on a made dash before tomorrow's showdown where the big prize will be ohio. >> winning ohio would be huge for the

like winning michigan was. provides enthusiasm for his supporters and more importantly money for his cpaign to continue. >> reporter: it's also a test to see if clinton can make & inroads with young voters. >> as millennials your voice i important. >> reporter: "snl" mocking her attempts to appeal to them by sounding more like sanders. >> you're angry and i'm angry, too, because the top 10% of the top 1% controls 90% of the wealth and the country. >> reporter: but clinton might have the last laugh if she holds on to her commanding delegate lead. kasie hunt, nbc news, charlotte, north carolina. at this hour millions across the south are bracing for more ways of devastating flooding after nearly a week of relentless rain and storm that left six dead and forces thousands to evacuate their homes. some communities now overrun by catastrophic floodwaters, and as nbc's m muel almaguer reports, it's a frantic race against the clock to save othersrs

the tonight of deweyville, texas is surrounded by rising water. 1,200 ordered to evacuate here, but some refusingo leave. the only way in or out now by boat or air >> you tnk you can help but you can't. >> reporter: with many homes already swamped, cars submerged and businesses lost, the nearby sabine river could crest tomorrow, promising to swallow what's not under water yet. >> tornado on the ground. >> reporter:his weekend millions faced tornado and hammering hail in arkansas. in importantuilla lloyd and ruby in their 80s have lost a lifetime of memories. >> water got about a foot deep. lots of mud from the water coming in. really gross. >> reporter: their daughter pam says the couple will have to start all over. >> they do not have flood insurance. >> reporter: in louisiana, 5,000 homes are water-logged. federal disaster declared by the president across much of this region.

battered for days. historicic flooding wiped out neighborhoods, roads and damaged bridges. more than 4,200 rescued in this state alone. tonight they are raraing the emergency levees but will they hold? back in texas, a slow motion disaster. deweyville is still losing ground. tonight i'm standing on what should be a grassy knoll next to a busy street, but as you can see this area is completely swamped. the homes behind me already have significant damage, but if the flooding forecast holds true, the water level here would rise another 4 feet, way above my head. leer, the damage here has already been historic, but if the flooding forecast holds true, it would be catastrophic. lester? >> all right, miguel, thank you. dozens of people are injured, some crically, after an amtrak computer train suddenly flew off the trac in the dark of night, and there are growing concerns about what may have happened before that crash, something based on

nbc's blake mccoy has latedetails. >> reporter: investigators on the ground in kansas trying to piece together what caused this terrifying ride. an amtrak train derailing, sending passengers and their belongings flying. >> just felt a jolt. we stopped in a big hurry and a lot of big smoke. >> you could see people falling. like they were going around like rag dolls, like a nightmare come true. >> reporter: antonio taylor suffered extensive bruising to his back. he was one of 32 people sent to the hospital, two with critical injuries. the train heading from los angeles to chicago derailing just after midnight 20 miles outside of dodge city, kansas. >> the track is all chewed up. >> reporter: despite several high-profile derailments from new york city to philadelphia to northern calififnia just last week, u.s. passenger train derailments are actually down in recent years.

back in kansas ntsb investigators say there may have been a problem with the track causing the engineer to slam the emergency brake. that was probably responsible for the train derailment not being any worse than it was. >> reporter: passengers today thankful to be alive. blake mccoy, nbc news, chicago. an american who traveled overseas to allegedly fight for isis has been captured in iraq. kurdish fighters say e was trying to flee isis when he stumbled into kurdish-held territory. it was all news to the man's family back here in the states who say they were shocked when they learned what he had been up to. we get more from nbc news chief foreign correspondent richard engel. >> reporter: this, according to kurdish fighters, is video. moment after an isis deserter surrendered himself to them, when they asked him where he was from, he said simply united states. >> where are you from? >> united states. >> reporter: the kurds say they found this virginia driver's

mohammed jamal quase. his uncle told nbc news they thought he was on vacation in europe. he crossed the turkish border a few months ago and joined isis and when the kurds asked whehe he had been he answered -- >> mosul. >> reporter: mosul, now an isis stronghold in iraq. last week, this man who said he's ann isis defector, provided nbc news with a cach of documents he claimed he stole from the group. the documents show foreign fighters have to obtain permission to leave with each request carefully logged in these forms. isis may be starting to lose its grip on its territory. last week a u.s. official said isis had retreated from 1,000 square miles. both the leaking of information and today's bizarre desertion show that isis may be cracking under the pressure from its many enemies. a u.s. law enforcement official said quase was apparently not not

who have traveled overseas. in other words, they didn't know he had gone to fight with isis until he got caught trying to sneak out. lester? >> richard engel, tonight. a surprise announcement today from russian president vladimir putin who says he's withdrawing most of russian troops from syria charging their mission has been accomplished.. putin sent forces in in october with a stated priority of attacking isis, but u.s. officials claim that russian air strikes were actually targeting rebels seeking to overthrow sysyan leader bashar al assad, a russian ally. there i i encouraging news about the youngest survivor from that deadly shooting rampage allegedly carried out by an uber driver in michigan last month. the teen's doctors and the family feared they had lost r, but now as our rehema ellis tells us, she is making a miraculous recovery. >> rorter: it's the first time we've seen 14-year-old abigail copf since she was

now smiling with her younger sister at a rehab center. >> abigail is amazing, progrezes tremendously every year. >> reporter: just three weeks ago doctors had pronounced abby dead but her mother didn't give up hipe. >> i said, baby, if you're in there and can hear me, just let me know. and within a few minutes after that i was sitting there, and then all of a sudden her hand just lightly went like that. >> i'm at the kalamazoo cracker barrel and there's been gunshots in a car. >> reporter: today police released 911 calls and dashcam video from the nightht when abby was shot, allegedly by 45-year-old jason dalton, then an uber driver. six people were killed and two injured, including abby.. tiona kruters had shielded children at a playground. this call recorded by a bystander comforting him. >> please don't move. they're coming, okay? please don't move. we've got the kids. please don't move. >> reporter: dalton told police he was being controlled by the uber app. he's undergoing a

evaluation. on sunday abby whispered to her parents that she loves them. >> it's overwhelming when you hear your daughter say that when you don't think you're ever going to hear her voice. >> reporter: her parents say abby is a fighter, still here because she's got a lot left to do. rehema ellili nbc news. still ahead here tonight, women a migraines. the critical time when women may face a growing list of these debilitating headaches and the conneion doctors can often miss. also, over60 million views and counng. the pint-sized basketball phenomenon with moves that we asked a group of young people when they thought they should start saving for retirement. then we`asked some older people when they actually did start savi. this gap between when we should start saving and when we actually do is one of the reasons why too many of us aren't prepared for retirement. just start as early as you can. it's going to pay off in the future. if we all start saving a little more today,

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we're back now with new insights into migraines, something tens of millions of american women suffer from each year, three times as many women as men. now, doctors are learning more about when a lot of women are most at risk and why their symptoms may go undiagnosed. here's nbc's anne thompson. an energrgic problem-solver, but in her late 40s this life coachaced a challenge even she couldn't manage. mike rain headaches, as many as 23 a month. >> like basically a claw was gouging out my eyes. >> reporter: how did >> i didn't. it was horrible. it was like i had -- i didn't have my life. >> reporter: she is e of a growing number of women reporting more migraines as they age. a new study says the frequency of these

during early menopause, affecting more than 12% of those women. >> it has to do with fluctuation of hormones. when they change rapidly, they go up and go down and they go up and go down again this, will trigger more frequent headaches. >> reporter: often, women and their doctors don't make the connection. >> open your eyes. >> reporter: because women don't realize they are in early menopause with its laundry list of symptoms including hot flashes, irregular periods and anxiety. is this problem all in a woman's head? >> no, but i think often women are made to feel that way which is probably why thehe don't like to talk about it. >> reporter: the doctor says if you're not taken seriously, find a specialist who treats older women and headacs. >> make a muscle. >> reporter: laurie went to five different doctors and tried more than a dozen medications before she found rejief. >> it's wonderful. i have my life back. >> reporter: once again able to help other people solve their problems now that hers is under control. anne thompson, nbc news, washington. we're back in a

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maryland police say three brothers planned and recorded a deadly ambush in a police station yesterday. investigators released images of one of the suspects shooting at passing vehicles as a shootout erupted. officer colson was kied and police just announced today his death was from friendly fire as officers responded to the firefight. police also say the suspect intended to die during the shtout, but he and his brothers are now in custody. the great white way came to the white house today as the firsrslady welcomed the cast of the broadway smash hit "hamilton" for a studenen workshop, answer questions and just a short time ago a performance of the show's opening number for the first family and a lot of excited fans watching live on theeweb.

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finally tonight, tens of millions have been wowed by her on social media,a, a viral sensation with a kind of basketball moves that would make and would take many a lifetime to perfect, but incredibly she's only 6 years old, and as our ron mott reports, she can dribble circles around grown-ups. >> mia. >> reporter: while many kids her age have soft and cuddly bed mates of the stuffed variety, 6-year-old jillia dozes off with ho dreams beside the family boxer tyson. >> gototo get up. >> reporter: and puts a bounce in her stop, especially on game time. pony tail, uniforms and shoes to impress. she's a dribbling dynamo, hand-eye coordination seen in

this close to the ground. her online videos captivating people the world over, more than 60 million views. are you shocked by this? >> i'm amazed and shocked and didn't know it would blow up like this. >> reporter: her father javon is more than just a proud pant. >> you reddy. >> part drill sergeant. >> passion the ball ov there. >> reporter: guidance counsellor. >> good defense, y'all. >> reporter:wagger, well, that's all hers. how much time do you put in? >> a @ot. >> reporter: do you skip any days? >> no days off, baby. >> reporter: d and mom tracy first discovered her interest in the sport when she was just one, barely walking and ever since basketball is usually never more than an arm's length away. >> she records the game on dvr and when she lays down to go to sleep she watched the games. >> reporter: a man nicknamed king james is her favorite plalar and she recently scored an invite to meet baskekeall royalty. what do you learn from lebron? what do you like about his game.

correctly and he dunks it. >> reporter: a first grader looks every bit the game's next queen on,a throne of her own in command of her force. ron mott. >> she shoots, she scores.

making an impact. the fight for florida nenlds 24 hours. >> as it usually does, it comes down to florida. >> the people really understand me. they know me. >> the candidates are crisscrossing the sunshine state. >> time to talk about what results i can produce for you. >> demococcy is not a spectator sport. >> hoping to sway last minute voters in the race for the white house. >> plus, millennials at the

like never before. >> we're talking to politically charged college students. and good evening. this is nbc 6 impact. >> thanks so much for joining us on this special prime time edition of "impact." >> all right. as you've seen, the race is unprecedentnt in many ways. ramping up for months here and across the country. >> now with voters in the sunshine state and across other states making their decisions tomorrow. last-minute stumping across the sunshine state and the midwest before tomorrow's critical primaries in florida, illinois, ohio, north carolina, and missouri. the race for the gop nomination is taking candidates from the midwest to the sunshine state. polls show ohioio governor john kasich has a good shot to win