indianapolis 500 next week. next sunday, we start at 11:00 a.m. eastern time. excellent things you will enjoy. plan fmp the preshas v race show. of the 500-mile race, who will win it? who will be known as the winner of the indianapolis 500? allen bestwick saying so long from indianapolis. james hinchcliffe is your pole winner.

welcome to "world news tonight." breaking news. the standoff with an alleged cop killer. a police officer fatally shot in the line of duty. the main suspect now cornered. police warning he's armed and dangerous. dead heat. trump and clinton neck and neck. our stunning new poll shows just how close the race for 2016 has become. and why bernie sanders says it's not over yet. mystery deepens. the egypt air crash and the clue stumping investigators. did a mechanical failure take down this plane? or was it something sinister? kidneys for sale? this father, one of more than 100,000 americans waiting for a transplant. tonight, the controversial new proposal. what your organ may get you in the future. plus, bear attack. his head in the jaws of a massive animal. how this man survived a close encounter with the

good evening. thanks for joining us on this sunday. as we come on the air, a standoff under way. police officer ronald tarantino shot and killed. and late today, police surrounding a house and ordering someone to surrender. eva pilgrim is near the standoff tonight. >> reporter: tonight, a standoff under way in this normally quiet neighborhood in central massachusetts. a man holed up inside a home just four miles from where someone gunned down a police officer early this morning. >> auburn has an officer down. an officer down. shots fired, trying to get more.

>> vehicle has fled. is responding. >> i didn't see anything. but i heard rapid fire, gunshots. initially i thought it was fireworks. >> reporter: auburn police officer ronald tarantino making a routine traffic stop overnight when police say the driver he pulled over opened fire. the 42-year-old father of three rushed to a local hospital, where he died. >> we will leave no stone unturned in our investigation to determine who was responsible for officer tarantino's murder. every investigative avenue is being pursued fully and completely. >> reporter: tonight, the search continues, divers even going under water, looking for clues. meanwhile, officers from nearby departments, paying their respects and giving their condolences for their brothers in blue at the auburn police department. and this little league team, even stopping by. taking a knee for their fellow neighbor killed t

duty. we've heard very little from police so far tonight, but we've been here for several hours and have heard police negotiating with someone, trying to convince them to come out. >> thank you. next, the race for 2016. new poll numbers revealing just how close the contest has become. the abc news/"washington post" poll, out today, showing donald trump with a two-point advantage over hillary clinton among register registered voters. an 11-point lead since march. and they're trading tough talk about guns. and bernie sanders says don't count him out yet. here's david wright. >> reporter: the brash billionaire closing a nine-point gap to overtake hillary clinton by a nose. >> i call her crook

>> reporter: they squared off over the issue of guns. >> he's talking about more guns in our schools, more hatred and division in our streets. >> i don't want to have guns in classrooms, although in some classrooms, some teachers should have guns. i think we'll do even better than that. >> reporter: the new poll shows trump and clinton to be the most unfavorable to ever run. that's why democrat bernie sanders told george he's sticking around. >> i don't want to see the american people voting for the lesser of two. >> reporter: hillary clinton has already crowned herself. last night, the season finale of "snl" imagined sanders as the guy hanging out at the bar too long. >> i'm sorry, but the

>> no, no, it's not over. it's not over until i say it's over. >> reporter: sanders insists he still has a pathway to victory, and he's made it clear he plans to stay in the race through the end of primary season. he has the most positive rating of the three. tom? >> thank you. and next to the deepening mystery of flight 804. more pieces of debris discovered today, but still no sign of the black box. and whether it was aircraft malfunction or terrorism could be to blame. here's matt gutman. >> reporter: tonight as debris and personal belongings are being scooped off surface of the mediterranean, the search begins beneath it. france moving this sub hunting ship into place tonight. it's mission now

the wreckage of flight 804. and egypt's president saying his navy is deploying a sub, capable of scanning the depths at up to 10,000 feet. how big is the search area? >> around 60-something kilometers. >> reporter: a radius of 66,000 kilometers, means the search area is massive. over 5000 square miles, or about the size of the state of connecticut. today the pentagon announcing it's p-3 planes flying round the clock sorties over the area, using those sophisticated sensors, have so far detected 100 pieces of debris. those warped seats, perforated handbags and smashed paneling suggest the violence with which the plane broke apart. during the final minutes of the flight multiple smoke sensors going off. including in the bathroom and just below the cockpit. it could indicate catastrophic mechanical error, or terror. >> in my view, it's highly likely because of the amount of effort that isis and al qaeda have put, over the last few years, into trying to develop an undetectable bom

>> we've looked at the intelligence and manifests. we haven't come up with any hard evidence of terrorism as of yet. >> reporter: the voice eerily cheerful. tonight hundreds gathered as his funeral. what everybody wants are answers. but it's possible the only clues may be with the black boxes, and there are few r than four weeks to retrieve them before they go silent. >> thank you. i want to bring in steve

ganyard. is it too early to rule out terrorism? >> well, there is good evidence that points to a mechanical problem, but we still need to consider terror. >> if it is a mechanical catastrophe, how surprising is that? >> it's very surprising. it's very reliable, and even the mechanical theory doesn't exactly fit. you shouldn't have a fire in the nose of the airplane that brings it down. >> thank you. and now to the air strike approved by the president that is believed to have taken down a man the pentagon says was at the helm of thousands of takes. mary bruce with details of the the strike, and the new pictures coming in.

charred car are all that's left after a u.s. airstrike targets afghan taliban leader mullah mansour. it's around 2:30 p.m. saturday in pakistan. u.s. officials say mansour is traveling in a remote region near the afghan border when multiple drones operated by u.s. special operations forces strike. mansour and a companion, riding in that car, are believed to be killed. president obama, traveling to asia on air force one, is updated by his national security team. the strike, authorized by the president, is the most aggressive u.s. military action in pakistan since the raid that killed osama bin laden. u.s. officials say mansour has been actively plotting to attack u.s. forces in afghanistan. >> mansour posed a continuing, imminent threat. >> reporter: since taking over last year, mansour has proven himself a brutal leader. at his direction, the taliban killing thousands. refusing to join peace talks. but tonight, u.s. officials are hopeful this could pave the way for a more moderate leader.

tom, while this is a window of opportunity, it's a narrow one. mansour's death will now likely welcome a power struggle, and whoever wins that battle could determine the future of the afghan peace process. tom? >> thank you. now to a man recovering after a bear attacked him, biting into his head. charging so fast, he had no choice but to fight back. here's aditi roy. >> reporter: tonight, a miracle in the wild. after an alaskan man comes face-to-face with a full grown, brown bear. >> it was like looking the devil right in the face. >> reporter: kenny steck encountered the predator while he was filling up water bottles during a hiking trip with family in southeastern alaska. the experienced outdoorsman said he had left his bear repellant back at camp when the massive animal came charging at him. when steck lifted his leg up to protect himself, the bear clawed it.

>> i remember thinking, this thing is going to kill me. >> reporter: he tried yelling, but he says the bear crushed his shoulder blade, and put steck's head in his mouth. >> one of his fangs had gone right into his head. >> i remember the sound of it breathing, snarling. >> reporter: then, suddenly, the bear just let go and ran away. his wife and three other family members on the trip, nurses. who were able to treat his wounds right away. >> for some reason it wasn't my time to die. >> reporter: looking back steck tells me it all happened so fast he might not have even had to time to reach for that bear spray. he just thinks he got incredibly lucky. tom? >> thank you. still ahead, a controversial new plan that could help thousands of americans like this father, waiting for a kidney donation. could you soon be able to sell your or began?

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welcome back. you've heard of selling your blood. what about selling your organs? a controversial plan is gaining moment momentum, and some say it could save thousands of lives. one lawmaker wants to allow the sale of organs. here's gloria riviera. >> reporter: tonight, the radical new proposal that kyle mckinney says could save his life. >> i personally think it would be a great idea. >> reporter: mckinney's kidneys started failing him at age 15. the husband and father now desperately hoping for a new one after four years on the wait list. >> it's hard on a family, it's hard on the girls. >> reporter: kyle is one of more than 100,000 americans on the wait list

die because there are not enough donors. a new pilot program proposed by congressman matt cartwright would test whether financial incentives would attract more donations. >> you make it something like a pension contribution, or an education fund contribution, something that is not transferable. >> reporter: but the national kidney foundation argues organ donation with any monetary incentive is a mistake. >> people who are poor may think differently about giving donation of a kidney if there is a financial reward for them to do so. >> reporter: the mckinneys say the financial challenges for many donors are real and this legislation could help. >> is they're any guarantee they'll keep their job, keep their insurance, keep some food on the table? because a lot of these people have families. >> reporter: gloria riviera, abc news, washington. >> thank you. coming up, some tense moments at the nation's

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nothing works faster stronger or longer what pain? advil. back now with our "index." starting with a weekend of volcano eruptions. one of them with deadly consequences. in indonesia, a powerful blast sent volcanic rock and ash shooting two miles into the sky. seven people working on nearby farms were killed. and take a look at this. mt. etna sounding off again. a spectacular eruption, sending huge plumes of smoke over the island of sicily. now to a traffic stop in milwaukee that quickly took a wild and dangerous turn. dash cam capturing it all. a driver pulled over for speeding. throws her car into reverse, slamming into the patrol car, then speeds off. one officer almost hit by oncoming traffic. the other, holding onto the driver's door. the 23-year-old suspect was caught a short time later. now, instead of just a ticket, she could be facing up to 45 years in prison. >

the white house today. the secret service alerted when a flying object was spotted flying over the white house grounds, prompting a lockdown for a few minutes. it turned out to be just some stray party balloons, which landed on the north lawn. still ahead tonight, an american dream come true. the one song she loves to sing, and what she had to overcome to make this moment happen. ♪ by the dawn's early light di? what if one sit-up could prevent heart disease? one. wishful thinking, right? but there is one step you can take to help prevent another serious disease. pneumococcal pneumonia. if you are 50 or older, one dose of the prevnar 13® vaccine can help protect you from pneumococcal pneumonia, an illness that can cause coughing, chest pain, difficulty breathing, and may even put you in the hospital. even if you have already been vaccinated with another pneumonia vaccine, prevnar 13® may help provide additional protection. prevnar 13® is used

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finally tonight, a dream come true for one holocaust survivor that loves singing the national anthem. tonight, john donvan and the singer and the voice that's "america strong." ♪ >> reporter: 89-year-old hermina hirsch loves to sing. especially this song. >> i love the song itself, i love it. >> reporter: her husband of 69 years says that singing has always brought hermina joy. >> this is her life, she likes to sing. >> reporter: recently, she told her family her dream, to sing the national anthem at the 5llpark for her favorite team, the detroit tigers. >> my older brother took a video of her, and gave it to andrea, she posted on social media. >> reporter: an audition, sort of. word spread and the tigers couldn't say no. ♪ by the dawn's

>> rechoslovakia in 1944. at 17 she was locked away in the notorious nazi concentration camp, auschwitz. she survived and built a family in america. they were there last night. 200 family and friends turned out at the ballpark to listen, and to celebrate. >> it's one of her favorite songs because she's so patriotic. because of everything she's been through and how she got here. ♪ for the land of the free >> reporter: as she hit the high note and a dream came true ♪ and the home of the brave >> reporter: john donvan, abc news. >> 89 years young, and "america strong." "gma" first thing in the morning, david muir will be right back here tomorrow night. i'm tom llamas in new york. have a great evening. good night.

>> chaos at umd. police say they were forced to use pepper spray. armed and dangerous. a gun man in a robbery and a shoot out still on the loose tonight. and when will it ever end? another rainy weekend with more wet weather ahead. your stormwatch forecast is first. [captioning performed by the national captioning institute, which is responsible for its caption content and accuracy. visit ncicap.org] >> now abc 7 news on your side. first, yet another day of rain, clouds and cool temperatures putting a damper on outdoor plans and don't put away that umbrella just yet. there is more rain ahead. josh knight has a look at your first forecast. tracking more rain. i n