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 suspect taken down by police. the late details coming in. 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 wild beast. good evening. thanks for joining us on this sunday. i'm tom llamas. as we come on the air, the suspect in the killing of a massachusetts police officer is dead. earlier today, police officer ronald tarantino shot and killed. during a traffic stop in auburn, massachusetts. police later surrounding a house not far from the scene. the emotional outpouring for the young father of three matched only by the intensity of the search to find his killer. here's eva pilgrim. >> reporter: tonight, a standoff in this normally quiet neighborhood in central massachusetts. sandra bellinger capturing the entire ordeal on her cell phone.

abc news confirming, the man now dead. 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. rochdale, heading towards the direction of leicester. >> 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. officers from nearby departments paying 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 in the line of duty. the information continues. we're still waiting to hear more details about exactly who this

man was. tom? >> 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 registered voters. an 11-point swing since march. when our poll found clinton carrying a nine-point lead over trump. the neck and neck polling coming as they're trading tough talk about guns. and as bernie sanders says don't count him out yet. here's david wright. >> reporter: donald trump says he's coming up fast, according to the new poll. the brash billionaire closing a nine-point gap to overtake hillary clinton by a nose. >> i call her crooked hillary. >> reporter: they squared off this weekend 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 cases, some teachers should have guns in classrooms, frankly. >> reporter: today, trump took

the new numbers in stride. >> i think we'll do even better than that. >> reporter: the new poll also shows trump and clinton to be the most unpopular candidates ever to run. nearly two-thirds of registered voters have an unfavorable view of both candidates. 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 evils. >> reporter: clinton has already crowned herself. >> i am going to be the nominee. >> secretary clinton is jumping the gun a little bit. >> reporter: last night, the season finale of "snl" imagined sanders as the guy hanging out at the bar too long. >> senator sanders, i'm sorry, but the night is over. >> 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. in about three weeks' time. according to the new poll, he has the most positive rating of the three of them. tom?

>> david, thank you. and next to the deepening mystery around egyptair flight 804. more than 100 new pieces of debris discovered today, but still no sign of the black boxes that could help determine why the plane disappeared from radar. and whether it was aircraft malfunction or terrorism that could be to blame. here's matt gutman. >> reporter: tonight as debris and personal belongings are being scooped off the surface of the mediterranean, the search begins beneath it. france moving this sub-hunting ship into place tonight. its mission now to locate something else in the depths, 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 kilometers, means the search area is massive. over 5,000 square miles, or

about the size of the state of connecticut. today the pentagon announcing its 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 terrorism. >> 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 bomb. >> we've examined the overhead im imanges, the intelligence and manifests. we haven't come up with any hard evidence of terrorism as of yet. >> reporter: the voice talking to air traffic control, eerily cheerful.

>> thank you so much. good day, good night. >> reporter: tonight, hundreds gathered at his funeral. the aifuation minister saying he wants to bring the families peace. >> the human remains will be the number one priority. >> reporter: what everybody wants are answers. since not a single terrorist group has claimed responsibility, it's possible the only clues may be with the black boxes, and there are fewer than four weeks to retrieve them before they go silent. tom? >> matt, thank you. i want to bring in steve ganyard. we just heard that no terrorist group has claimed responsibility. sa far, no evidence of terrorism. but is it too early to rule that out? >> well, there is good evidence that points to a mechanical problem. but we can't take anything off the table. there's still a big investigation to go, and we need to consider terror. >> if it is a mechanical catastrophe, how surprising is this for one of the most popular

jet liners out there? >> it's very surprising. this is a very popular airliner, has flown everywhere around the world. very reliable. but even the mechanical theory doesn't exactly fit. you shouldn't have a fire in the nose of the airplane that brings it down. >> so many questions still. steve, thank you. and president obama has arrived in vietnam for an historic visit. the president greeted with flowers on the tarmac as he begins a three-day visit, looking to improve ties between the two countries. he's the third president to visit vietnam. topping the agenda, shared concerns over china and security. before taking off, the president authorizing an air strike that officials believe killed a top terrorist leader. the pentagon says he was at the helm of attacks that killed

throws of afghan citizens and u.s. personnel. mary bruce with details of the the strike, and the new pictures coming in. >> reporter: flames and this 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 flown 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? >> mary, thank you. meantime in iraq, residents of the city of fallujah asked to prepare to leaf -- leave before an impending ground operation by iraqi forces to take it back from isis. it was the first city to fall to isis in january, 2014. next tonight, drama and danger at the world's tallest peak. a pair of climbers have died, and two more are reportedly missing on mt. everest. here's lauren lyster. >> reporter: a desperate search is under way tonight for two hikers missing on the roof of the world. 30 more suffering severe illness from the dangerous climb.

this, after eric arnold and maria strydom died from altitude sickness after reaching the world's tallest peak. strydom climbing with her husband. >> a climber can develop altitude sickness anywhere on everest, and it can come on suddenly and with no warning. >> reporter: arnold was a professional climber who was attempting everest for the fifth time. he survived this avalanche last year that claimed 18 lives, and shut down the mountain. over 250 people have died trying to summit everest, but more people than ever are trying to ascend the mountain. some of them without the proper training. >> the problem with everest isn't necessarily the number of climbers, it's the experience. they feel qualified to take the highest mountain in the world. >> reporter: at nearly 30,000 feet, even the smallest problems can turn tragic. lauren lister, abc news. next, a warning tonight about the zika virus coming to america. it could be within the month, as the mosquito season is upon us.

this, according to dr. anthony falchi. telling george stephanopoulos on "this week" that mosquitoes may begin infecting people in the states. more than 500 americans already have the virus, but those cases are travel-related. now to a monster super cell sweeping across kansas. one of three reported tornadoes touching down there. also scattering large hails in billings, montana, and a tornado watch across five states. indra petersons, let's start with the tornado watch. >> we'll continue to watch the same setup. the cold pool of air in the pacific northwest. banging up against the warm air in the central part of the country. and with that, the tornado watch extends across the plains this evening. into tomorrow, the threat will expand all the way into minneapolis and sioux city. and an enhanced risk area will be out there. and watch out for damaging winds, hail, and isolated tornadoes.

warm air expanding to the northeast through the work week. instability still in for the holiday weekend. now to a man recovering after a bear attacked him, biting into his head. the bear 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, and i remember the sound of it 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 time to reach for that bear spray. he just thinks he got incredibly lucky. tom? >> a wild story. aditi, thank you. still ahead, a controversial new plan that could help thousands of americans like this father, who is desperately waiting for a kidney donor. could you soon be able to sell your organ? and later, what one driver did possibly to get out of a speeding ticket. how this drastic stunt played out.

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welcome back. you've heard of selling your blood. what about selling your organs? a controversial plan is gaining momentum, and some say it could one day save thousands of lives. currently, it's illegal to sell your organs. but one lawmaker wants to change that. 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 for a new kidney. every day, at least 12 people 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. >> reporter: the mckinneys say the financial challenges for many donors are real and this legislation could help. >> is there 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. >> gloria, thank you. coming up, some tense moments at the nation's capital. a small object, big concern. what was it that suddenly had the white house on lockdown? and, powerful volcano eruptions. one of them taking a deadly toll. and it's not over yet.

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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. back here at home, 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. next, some tense moments at the white house today. the secret service alerted when an object was spotted flying over the white house grounds, prompting a lockdown for a few

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finally tonight, a dream come true for one holocaust survivor who just loves singing the national anthem. the song has inspired her through many tough times. tonight, john donvan and the singer and the voice that's "america strong." ♪ oh, say can you see >> 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 ballpark for her favorite team, the detroit tigers. >> the next thing you knew, my older brother took a video of her, and gave it to andrea, and andrea posted it on social media.

>> reporter: an audition, sort of. word spread and the tigers couldn't say no. ♪ by the dawn's early light >> reporter: hermina was born in czechoslovakia. in 1944, at 17, she was locked away in the notorious nazi concentration camp called 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 [ cheers and applause ] >> reporter: john donvan, abc news. >> hermina hirsch, 89 years young, and "america strong." we thank john for that story. "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.

next, a mother badly burned a child lost in the fire. neighbors in vallejo describe a panicked scene when a house went up in flames. and san francisco's acting police chief tries to reach out to the community. >> got to expect pretty much anything. >> steph curry says he is ready to