abc's clayton sandell has the the latest. >> reporter: police in phoenix have a new lead in a serial street shooting case. >> investigators tell abc they have a person of interest, reportedly he is aaron saucedo in a series of nine neighborhood shootings last year march to july. seven people killed at random. this man, one of the few to see the suspect, and live to tell about it, says police told him, we caught a guy and we thing it might be him. police won't confirm, saucedo as person of interest. >> recently arrested for a 2015 murder allegedly using the gun he sold to a pawnshop. the gun by coincidence was tested during another unsolved serial shooting case on phoenix free ways in 2015. but investigators say for now, there is no evidence saucedo is involved. saucedo has not been charged arrested or named suspect in any of the shootings except for the 2015 murder. he says he didn't do it. clayton sandell, abc news, phoenix. >> the federal government is cracking down on 14 companies that make false promises about cancer cures. the fda calls the more than 65 products quoting here, a

clayton sandell, abc news, denver. >> when we news for fans of the "x files."f thrones fans excited this morning "the skinny" is next. >> what's got -- what's got? " is next. >> what's got -- what's got? how your clothes smell can say at lot about you. that's why new downy protect and refresh conditions fibers to lock out odors. so clothing odors don't do the talking for you. lock out odors with new downy protect and refresh. ♪ skinny ♪ skinny ♪ so skinny >> time now for "the skinny" starting with the big headline for fans of the x files. >> there are a lot of them. just over a year after the brief, but wildly successful return of the sci-fi conspiracy series. fox announced it is bringing the show back for next year's broadcast season. >> okay, so another limited revival. just ten new episodes. but stars david duchovney and jillian andersen both on board to reprise their roles as mulder and scully and creator/executive producer chris carter signed on as well. >> right. whole gang. last year's limited revive sal, catapulting it to number three show behind empire

clayton sandell from houston, texas. a tornado touching down in that state. the weather is far from over in the south tonight, right, clayton? >> reporter: that's right, tom. the storms are just beginning to fire up in louisiana and the governor there is asking people to stay off the roads and get the storm shelters ready. >> clayton, thank you. abc's senior meteorologist rob marciano is here. he is tracking it. what is the headed to? >> you mentioned how rare the high risk is. i want to show you the map. a particularly dangerous situation, dangerous tornado watch that is equally as well. expanding to mississippi. and flood watching as well. a lot of heavy yan and training thunderstorms with this. and louisiana, tornado warnings right now. we move forward to the night, in mississippi by tomorrow morning and a couple more waves across the gulf coast, montgomery, birmingham, atlanta by 1:00, 2:00 in the afternoon. moderate risk that is very dangerous from mobile to columbus. and long track tornadoes in a populated area. dangerous as well. >> the teams will be t

abc's clayton sandell with the video tonight. >> reporter: this is 10-year-old john benjamin haygoodt school. >> does he have the same rights as an adult? >> reporter: his mother, who says her son has autism, recording as deputies arrest him for being an accused felon. >> i don't wanna be touched. >> does he need to be told -- >> he doesn't have to be told, he has a warrant. >> so not even an adult has the right to be told when they're arrested why? >> this is so [ bleep ] dumb. >> yes, it is. >> reporter: deputies in okeechobee, florida, say they arrested haygood because he had a warrant for allegedly assaulting his teacher, kicking scratching and punching him, back in october. >> i don't understand. >> i know, honey. he has autism. he doesn't know what's going on. he's scared to death. he's 10 years old. >> i don't know what's [ bleep ] going on. >> reporter: he's been out of school and learning at home since october, but was arrested a few days ago when he came back to school to take a test. >> it was because of his autism that spurred this incident, and he was arrested for that.

abc's clayton sandel with the latest. >> reporter: investigators call it an ambush and are engaged in an all-out manhunt. outside this courthouse, harris chief constable, clinton greenwood just arriving for work. then some one opened fire. >> as officers arrived on scene, assistant chief deputy, clint greenwood found shot one time. a helicopter rushed greenwood to an emergency room. he did not survive. greenwood was a 30-year law enforcement veteran. >> grew up in west houston. i-10. got my bachelor's degree from rice university. >> reporter: served as prosecutor, defense attorney. investigators are looking into whether any one from past cases may be a suspect. investigators are towing, greenwood's suv from the crime scene. there have been no arrests. there is a reward of $65,000. clayton sandel, abc news, baytown, texas. >> coming up in the next half-hour, the good samaritan, risked his own life to save a man who fell on to the subway tracks. >> first, it is election day in one key congressional district. we'll meet one candidate, a one-time undocumented immigrant. hoping though to m

here is abc's clayton sandell. >> reporter: investigators call it an ambush.side the court, the chief p greenwood had just arrived for work and someone opened fire. >> assistant deputy greenwood was shot one >> reporter: a herself rulicoptd him to the hollywood. he did not survive. >> i got any bash lor's degree from rice university. >> reporter: he served as a prosecutor and defense torn. they are looking to see if anyone from his past might be a suspect. you can see they are just toeing his suv from the crime scene here. there is now a reward. $65,000. david? >> thank you. >>> new findings tonight about asprin and cancer. >>> also, the deadly boiler explosion. the boiler sent in the air crashing into the next building. we'll be right back. tissue test? the what? ... tissue test! hold this up to your teeth... ...ugh yellow... i don't get it. i use whitening toothpaste. what do you use? crest whitestrips you should try them! whitening toothpaste only works on the surface. but crest whitestrips safely work below the enamel surface ... to whiten 25x better than

abc's clayton sandel with the latest. >> reporter: investigators call it an ambush and are engaged inside this courthouse, harris chief constable, clinton greenwood just arriving for work. then some one opened fire. >> as officers arrived on scene, assistant chief deputy, clint greenwood found shot one time. a helicopter rushed greenwood to an emergency room. he did not survive. greenwood was a 30-year law enforcement veteran. >> grew up in west houston. i-10. got my

here is abc's clayton sandell. >> reporter: investigators call it an ambush and are now engaged in an-out manhunt. outside this baytown courthouse this morning, chief clint greenwood had just arrived for work and someone opened fire. >> as officers arrived on scene, assistant chief deputy clint greenwood was shot one time. >> reporter: a helicopter rushed him to an emergency room. but he did not survive. greenwood was a 30-year veteran. >> i grew up in west houston. i-10. i got any bachelor's degree from rice university. >> reporter: he also served as a prosecutor and defense attorney. investigators are looking into wlo anyone from his past cases might have been a suspect. you can see they are just towing his suv from the crime scene here. there are no arrests tonight but there is now a reward. $65,000. david? >> thank you. >>> new findings tonight about asprin and cancer. >>> also, the deadly boiler explosion. the boiler sent in the air crashing into the next building. we'll be right back. the what? ... tissue test! hold this up to your teeth... ...ugh yellow... i don't get it. i use

here's abc's clayton sandell. >> reporter: one of the deadliest bus crashes on record and witnesses say they saw it coming. >> i'm following this guy. he's in a white dodge dually. he's all over the road, both sides. somebody needs to stop this guy. >> reporter: that's jody kuchler, calling in to report that truck. police say 20-year-old jack young was behind the wheel. >> he's going to hit somebody head-on or he's going to kill his own damn self. somebody needs to get this guy off the road. >> reporter: but before deputies can respond, the truck slams head-on into the church bus. >> i'm the one that called in a while ago. i got this guy on video hitting this bus head-on. >> reporter: that collision ended the lives of 13 people, members of the first baptist church in new braunfels, texas, coming home from a bible retreat. >> our church family is doing what we should do, and coming together and grieving with those who grieve and weeping with those who are weeping, because they've suffered loss. and we hurt with them. >> reporter: tonight, the national transportation safety board says the

george. >> okay, clayton sandell, thanks very much. >>> we got a lot of tough stories.et's switch gears. >> we'll talk about the game everyone is talking about. unc getting sweet redemption last night beating gonzaga and taking home their sixth national championship and who else is better to be there than our own t.j. holmes out there in phoenix, arizona. how are you doing, t.j.? >> reporter: hey, i'm doing well but talking to these players after winning a national championship last night, talking to them one-on-one, i didn't see a lot of smiles. there was a lot of emotion. it was like a weight had been lifted because they have been on what they called themselves a redemption tour for the past year to where anything less than a national championship this year was unacceptable. well, they got it but it was not pretty. >> this year, the confetti is going to fall for north carolina. >> reporter: redemption for north carolina. >> bringing the championship back to chapel hill. >> reporter: the tar heels are champions once again beating gonzaga for their sixth title in school

now learning that the officer told officials just last week he feared for his safety and abc's clayton sandell the details. >> reporter: this morning a manhunt for a cop killer. overnight police releasing this video of the suspect's getaway car leaving the scene. investigators believe someone in that car opened fire on harris county sheriff assistant chief clint greenwood just as he arrived to work monday morning at this baytown, texas, courthouse. gre greenwood was married and had a 30-year career as a top and prosecutor focused on police corruption. "the houston chronicle" reports last week he told colleagues he felt threatened by someone he once investigated in a corruption case reportedly writing in an e-mail, i believe this person poses a real threat to my and my family's safety. >> i heard two shots. he was on the ground and then i saw the cars coming very quickly. >> assistant chief deputy clint greenwood was found to have been shot at least one time. >> reporter: bullets shattering the windows of his suv, a helicopter rushed greenwood to a hospital but he did not survive. police have n

abc's clayton sandel starts off our coverage. >> reporter: millions under a tornado threat. one twister left hiss very real path of destruction. >> we ask that everyone stay off the roads. >> reporter: a family in beaubridge, louisiana in this home, tornado packing 100 mile an hour wind tore it apart killing a mother and her 3-year-old child. across the south, lightning strikes sparking fires, igniting this oil tanker in shreveport. the clouds opening up, quarter sized hail and pounding rain. heavy flooding stalling drivers in lafayette. highways in dallas, dangerous mess. it is the nation's second recent blast of severe weather. a tornado destroying this church in chesapeake, virginia, friday, drone video shows the church and neighborhood around it in ruins. >> when we were dispatched to a fire alarm. >> reporter: in virginia beach, ef-2 tornado with wind, 120 miles an hour toppling fences uprooting trees and ripping the side off this house. >> chimney is off. holes inside the siding. house is missing. it's just overwhelming. >> reporter: 50 homes were damaged forcing 30 re