deadly ride. new details about the fatal accident. a teenage girl thrown from a spinning carnival attraction. questions tonight about safety at the fair. and, watch out. the bicycle race that began with a crunch. dozens crashing into each other. some going airborne. what triggered this epic pile-up? good evening. thanks for joining us on this sunday. i'm tom llamas. as we come on the air, we begin with the deadly flood emergency in the south. more than half a foot of heavy rain coming down in louisiana, with another round possibly on the way. in atlanta, a home split in half by a huge tree. a 72-year-old woman and her nephew, somehow able to make it out alive. and the heavy downpour forcing thousands at new orleans' famous jazz fest to find cover for a second day in a row. here's lauren lyster. >> reporter: tonight, louisiana under water after torrential rains and flash floods. >> that's crazy, thank you lord that i got off of this. >> reporter: in texas, this driver escaping just moments before the road split apart and crumbled. >> we have a possible missing family. >> reporter: all that rain turning deadly when a wall of water rushed into the town of palestine friday overnight. lenda asberry desperately tried get her four great-grandchildren, all under 10, out of the house. >> a tide of water came through and it was too much pressure. >> reporter: all five drown. their neighbors unable to reach them in time. >> lord jesus, just please, i just don't know what you're doing to me. you took my four babies from me lord god and i don't know what to do now. >> reporter: texas slammed over the weekend. six tornadoes touching down in the state since friday. two ef-2 twisters in the town of lindale. take a look at this window, that's where the front door used to be. the tornado literally picking this house up and moving it 12 feet. hiding inside, the reeves family could feel their house lift off its foundation. today they showed us what's left. >> are you sad? >> no, mommy's not sad because you're okay. >> reporter: a tough trip home for 2-year-old anne marie. and what now? >> well, i just say we pick up the pieces and rebuild. we have our family. that's what makes a home. >> reporter: lots more cleanup ahead. this looks like it could be a floor. it's actually the cinder block wall of this store. ripped out of the ground by the 115-mile-per-hour winds. the good news, after one more day of stormy weather, we can look forward to a much drier week ahead. tom? >> lauren, thank you. we move on to the toxic training wreck in the nation's capital. the cargo train jumping the tracks early this morning. up to 14 cars derailed, at least 2 leaking dangerous chemicals. emergency teams now trying to contain the leaks. here's gloria riviera on the scene. >> reporter: tonight, 14 rail cars, some packed with hazardous chemicals, scattered across the tracks near washington, d.c. it was 6:40 a.m., when the train with three locomotives and 175 cars, jumped the track, less than three miles from the u.s. capitol building. >> looks like the train has come apart. and i'm looking at one train that is leaking the chemicals. >> reporter: the accident jolting nearby residents. >> they said it was a leak. i didn't know if it was going to be harmful to me, my neighbors, the environment. >> reporter: another tweeting, i wake up to a boom, and find out a hazmat train derailed with sodium hydroxide. >> it's a chemical similar to breach or drano. >> reporter: a dangerous chemical if it touches the skin. another car leaked ethanol, a flammable liquid. first responders stopping the leaks within hours. tonight, investigators are still working to find out what caused the derailment. officials say they've tested the air and water quality in this area and both are safe. tom? >> gloria, thank you. now to the race for president. new numbers tonight suggesting ted cruz's support may be collapsing two days before the indiana primary. a statewide poll showing trump at 49%. holding a 15-point lead over cruz. kasich ceding the state as part of his cruz alliance. and trump on course for a crucial delegate win that could force his rivals to re-examine their campaigns. here's devin dwyer. >> reporter: tonight, donald trump says it's game over for john kasich and ted cruz. >> i knocked out 17 people. i mean, the two last ones, they're like hanging by their fingertips. they're choking, don't let me fall, don't let me fall. >> reporter: the front-runner exuding confidence after a two-week winning streak across six states. >> if we win indiana, most people think that they quit the race. and, then we can focus on crooked hillary. please, let's focus on hillary. >> reporter: indiana, now looking like a make or break race for cruz. who's showing no signs of giving up. despite trailing trump by more than 400 delegates. >> if you're on the 30-yard line, it's not a touchdown. donald right now is on the 30-yard line, and he wants everyone to say, hey, the game is over. >> reporter: cruz has unleashed a barrage of attack ads in indiana, as democrats itch to take on trump. >> this hateful talk about immigrants, about muslims, about women, i mean, enough. >> reporter: at hillary clinton's only indiana rally today, her supporters told us it's time for sanders to bow out. >> we need to wrap it up and start the general against donald trump. >> reporter: it sounds like you want sanders to get out. >> pretty much. >> i would like to see sanders try to bring some of his supporters over to her as well. >> reporter: but tonight, at a press conference in washington, sanders signaled he's willing to fight. >> the convention will be a contested contest. >> reporter: trump tonight says a win here in indiana would signal a mandate for change. sounding an awful lot like barack obama's slogan from 2008. trump saying his change would be very different. tom? >> devin, thank you. overseas, the state of emergency in baghdad. iraq's prime minister ordering the arrest of protesters that stormed the parliament building saturday, reaching the green zone. organizers ending the demonstrations today. and now to the details on the deadly carnival accident in texas. a teenage girl killed, another hurt. witnesses claiming the seat belts unbuckled. here's mary bruce on the investigation. >> reporter: tonight texas police are investigating how a turn on this popular ride led to the death of this 16-year-old girl. >> this is not something you ever think is going to happen. >> reporter: police say samantha aguilar died after she was thrown from this whirling ride at an el paso carnival, and slammed into a metal barricade. her friend, also ejected from her seat, tonight is recovering from a head injury. a third girl was unharmed, only after clinging desperately to the lap bar. carnival rides in texas are inspected by the state once a year, and overseen by the federal government. a police spokesperson tells abc news, there were seatbelts and that safety bar, but they don't know if they were functioning or used. >> i don't foresee them finding anything criminal at all in this and it most likely will come down to either one of two things, a human factor or a mechanical malfunction. >> reporter: this on the heels of another scare at an amusement park in texas. this dad, recording on a roller coaster when his 6-year-old son's seatbelt fails. >> you're fine. i promise, okay? >> reporter: his father holding him tightly, the little boy shaken, but safe. as investigators look into this this weekend's tragedy, that carnival tonight remains closed. we've reached out to the owners, but they are not commenting. tom? >> mary, thank you. an historic cruise under way, for the first time in more than 50 years, launching from miami to cuba. americans still can't visit cuba as tourists, this is considered impact travel and will incorporate cultural exchanges. the u.s. and cuba reestablishing diplomatic ties. to minneapolis now, and the potential battle brewing over prince's $300 million estate. family members laying claim to his fortune in court tomorrow. prince dying with no known will. here's eva pilgrim at paisley park tonight. >> reporter: tonight authorities turning their attention to prince's medication, and whether the star died of a drug overdose. sources telling abc news the superstar was getting prescriptions from multiple doctors. authorities have executed a search warrant at his local walgreens. but no official word yet on why he died. toxicology results still weeks away. meanwhile, the superstar's family heads to court tomorrow as they move forward to settle his estate. >> i had to protect him. >> reporter: prince's older brother alfred remembering his little brother. his attorney putting to rest rumors of family disputes today. >> with any estate matter, with any family matter, weddings, funerals, emotions, you know, soar. >> reporter: and tonight with an estimated $300 million estate on the line, people claiming to be heirs are coming out of the woodwork. heir hunters international, a company that searches for possible heirs to estates has been overwhelmed with people claiming to be prince's love child. so far, one man's story has piqued their interest. >> he was born in the '80s and his mother crossed paths with prince a couple times. as i'm sure many, many other people did. >> reporter: heir hunters is still verifying key details of his story. if prince had any children, they would inherit his entire estate. >> eva, thank you. now to the mystery disappearance of a mother in florida. an intense search for the missing air force veteran under way. she was reported missing after she didn't pick up her daughter. here's aditi roy. >> reporter: tonight, a community desperate to find a missing mother in florida. dozens of volunteers on the ground, and a police helicopter in the air. she was last seen wednesday morning. authorities calling her disappearance suspicious. >> we know she's out there somewhere. and we just want our girl back. >> who are you? >> i don't know. >> reporter: todd was supposed to pick up her 2-year-old daughter from her ex-husband's house but never showed up. her ex-husband is now scheduled to be re-interviewed by police. authorities telling abc news he's not a suspect. >> he has been completely cooperative. he's willing to take a polygraph test. >> reporter: police found her car wednesday night, with the keys in the ignition and her purse inside. tonight, a vigil planned. as a community clings to hope. aditi roy, abc news, san francisco. >> aditi, thank you. the first family making plans after the white house. today, we learned that obama's oldest daughter malia will be attending harvard in 2017. she will take a year off before her freshman year. the president and mrs. obama plan to spend two years in washington until their younger daughter sasha finishes high school. and president obama enjoying one more round with the press, and everything was fair game. here's nick watt. >> eight years ago, i said it was time to change the tone of our politics. in hindsight, i clearly should have been more specific. >> reporter: a self-deprecating dig at his legacy, and a little roasting. >> gop chairman reince priebus is here as well. the republican party, the nomination process, it's all going great. keep it up. >> reporter: for the host larry wilmore. >> i saw you hanging out with nba players like steph curry. which makes sense, too, because you both like raining down bombs on people from long distances. right? >> reporter: some boos in the room and bad reviews. obama, they say, killed it. >> last week, prince george showed up to our meeting in his bathrobe. that was a slap in the face. >> reporter: but seriously, what's next? >> if this material works well, i'm going to use it at goldman sachs next year. earn me some serious tubmans. >> reporter: this, the last time we'll see him as stand-up in chief. >> obama out. >> reporter: nick watt, abc news, washington. >> the president getting a standing ovation last night. still ahead, a new way to target consumers. a u.s. senator says billboards may be spying on you. the new way you're being targeted. is this going too far? and later, chaos at a bike race. cyclists crashing into each other. wait until you see all of this video. what caused this massive pile-up? he's agreed to give it up. ok, but i have 30 acres to cover by sundown. we'll be with him all day as he goes back to taking tylenol. yeah, i was ok, but after lunch my knee started hurting again so... more pills. yep... another pill stop. can i get my aleve back yet? 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here's marci gonzalez. >> reporter: tonight, one lawmaker raising concerns over whether some of the billboards you pass every day are spying on you. new york senator chuck schumer sounding the alarm. >> your every move could be tracked, recorded, and stored. >> reporter: certain billboard companies could be using cell phone data to target consumers. billboard giant clear channel explaining on its website how its program works. >> radar measures consumers' real world travel patterns and behaviors. >> reporter: all of that data to figure out what to advertise and where. >> i think it's a bit intrusive. >> reporter: schumer now calling for a federal investigation. >> here's the bottom line. a personal cell phone should be just that. personal. it shouldn't be a james bond-like tracking device for a corporation. >> reporter: clear channel telling abc news, the data they get comes from a third party. like your cell phone provider, and that all data is anonymous. some experts likening it to clicking on an item online, and having its advertisement follow you as you browse. >> whether it's via your browser, your mobile browser, a billboard, we are all being tracked. >> reporter: is a way to at least limit the data shared, it just takes one click in your privacy settings. tom? >> thank you. when we come back, the falcon has landed. the "star wars" buzz in high gear. where the millennium falcon has been spotted on earth. and big papi's babe ruth moment. what he told one little fan before friday's game, and how he kept his word when he stepped up to the plate. stay with us. he stepped up to the plate. stay with us. sore elbow? what joint pain? advil liqui-gels are so fast, they make pain a distant memory nothing works faster stronger or longer than advil liqui-gels the world's #1 choice what pain? advil. if you have allergy congestion muddling through your morning is nothing new. introducing rhinocort® allergy spray from the makers of zyrtec®. powerful relief from nasal allergy symptoms, all day and all night. try new rhinocort® allergy spray. that reminds me... anyone have occasional constipation, diarrhea... ...gas, bloating? yes! one phillips' colon health probiotic cap each day helps defend against occasional digestive issues. with three types of good bacteria. live the regular life. phillips'. ♪ the sun'll come out for people with heart failure, tomorrow is not a given. but entresto is a medicine that helps make more tomorrows possible. ♪ tomorrow, tomorrow... ♪ i love ya, tomorrow in the largest heart failure study ever. entresto helped more people stay alive and out of the hospital than a leading heart failure medicine. women who are pregnant must not take entresto. it can cause harm or death to an unborn baby. don't take entresto with an ace inhibitor or aliskiren. if you've had angioedema while taking an ace or arb medicine, don't take entresto. the most serious side effects are angioedema, low blood pressure... ...kidney problems, or high potassium in your blood. ♪ tomorrow, tomorrow i love ya, tomorrow.♪ ask your heart doctor about entresto. and help make tomorrow possible. ♪ you're only a day away ♪ welcome back. our "index," starting with a pileup at a bike race in new york city. take a look at this. seconds after it started, the pace motorcycle broke down, causing a nasty chain reaction. cyclists slamming into each other, falling off their bikes. at least seven reportedly injured. and the millennium falcon landing on earth. here it is, the famous "star wars" ship spotted in england where "star wars" episode eight is being filmed. one clue, it's right next to a set that resembles the final scene of "the force awakens". now to the royal family, and the little princess growing up so fast. tomorrow, she's already going to be a year old. her privacy, usually very carefully guarded, but these are the first pictures released in several months. now to big papi, and a legendary move. coming through on a big promise to one fan. before friday's game, david ortiz told a little boy he's going to hit a home run and he was watching as he stepped up to the plate and knocked it out of the park. >> big papi, you never let me down. and you're the best player ever in the red sox game. >> we agree. maverick hopes to meet his hero one day at fenway park. still ahead, a day care worker gets the surprise of her life. how a small community rallies to make her life so much better. how a small community rallies to better her life. stay with us. ...with humira. humira works by targeting and helping to block a specific source of inflammation that contributes to both joint and skin symptoms. it's proven to help relieve pain, stop further joint damage and clear skin in many adults. humira is the #1 prescribed biologic for psoriatic arthritis. humira can lower your ability to fight infections, including tuberculosis. serious, sometimes fatal infections and cancers, including lymphoma, have happened, as have blood, liver and nervous system problems, serious allergic reactions, and new or worsening heart failure. before treatment, get tested for tb. tell your doctor if you've been to areas where certain fungal infections are common, and if you've had tb, hepatitis b, are prone to infections, or have flu-like symptoms or sores. don't start humira if you have an infection. want more proof? 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"gma" first thing in the morning. david muir will be back here tomorrow night. i'm tom llamas in new york. have a great evening. good night. next at 6:00, loved one mourning the loss of a mother and daughter, return to the scene of the crash with a strong message. a california family fights to keep a young boy alive after devastating news from doctors. >> two-thirds of the warriors star power still shining bright. fans and players react to a big win without steph curry. abc7 news at 6:00 starts now. this is really -- one year, feels like it's yesterday. >> the pain of loss still strong for loved ones a year after a drunk driver killed mother and daughter during a celebration. the family of the mother and daughter reunited scene of the crash today. tiffani wilson was there and has their powerful message for drivers. >> a baby holding her bottle. a mother holding her daughter. everyday moments now the lasting memories this family holds on to. >> she just like an angel. and that's why we remember. like an angel. >> espiranza rodriguez and her 40 s-h-h-h-month-old daughter died when an accused drunk driver, brian jones, crashed into them after leave thing livermore wine festival. >> it's been a tough year. >> last year as this team the family was celebrating first communion. for some was the fir time back to the crash site. >> one year, feels like yesterday. just a couple hours. >> they made a somber procession down the street jones drove. >> people have choices to make and it's fine if they want to go to the wine festival or go anywhere and drink, but they need to make a choice before