this morning on "world news now," the dramatic new body cam video. showing the chaotic moments of the las vegas massacre. authorities releasing the video hours ago, showing officers surrounding the mandalay bay hotel trying to figure out where the shots were coming from. and the shooter's girlfriend is back in the u.s. we're live in vegas. and president trump going to the disaster zone, meeting with officials. in puerto rico. and new this half hour, never before seen video showing a bomb exploding in the heart of new york city. the pedestrians running for cover. the new images as the accused bomber's trial gets under way. and we have the new images

days after leaving prison. it's wednesday, october 4th. from abc news, this is world news now. >> and good morning everyone on this wednesday. we start this half hour with a first look at the las vegas massacre through the eyes of the police. >> new body cam video shows the chaos and confusion unfolding as officers try to locate the shooter and keep concert-goers out of the line of fire. >> investigators are still processing everything they've found in the shooter's hotel room, including two dozen guns. and devices used to turn rifles into rapid-fire weapons. we begin with abc's matt gutman. ♪ god bless america >> reporter: this was the crowd at the harvest festival, 22,000 people joining together for "god bless america." bu

spectator was watching them, a mass murderer. they're learning how 64-year-old stephen paddock planned his attack. he checked into the glittering mandalay bay resort last thursday. on september 28, he checked in, carrying multiple bags and likely passing a sign just like this. but paddock didn't just bring a weapon, he brought an arsenal, ten suitcases packed with 23 guns. abc news has obtained this video. weapons everywhere. and a pile of magazines. through the battered doorway, crime photos show an ar-15, outfitted with a scope and bipod. to stabilize the weapon. parts of what eyewitnesses call that "kill box", were a full five football fields away, a range of which would have been impossible had he been using handguns instead of long

he shuttered himself in his suite, taking in room service, say police, as the country music festival kicked off. waiting. on sunday, that joy turned to panic, when at 10:08 p.m., he started firing down on the crowd below. shots coming for nearly 9 minutes. for the first time, police playing body camera footage at a press conference. >> everybody stay down! >> reporter: but as s.w.a.t. teams approach the 32nd floor, the shooter may have had eyes on him. police say he'd set up at least two cameras, one monitoring the hallway, seen right there on that service cart. and when officers finally broke down the door. >> breach, breach, breach. >> reporter: paddock had killed himself. his body laid out near all those guns. the sheriff saying there had been multiple employees inside that room before the shooting, wh

it's possible, given the elaborate setup that paddock had in that room, with multiple weapons, thousands of rounds of ammunition and of course those cameras, how it all went unnoticed. matt gutman, abc news, las vegas. >> amazing work that the police did in the wake of all that. and the police now say the death toll is 58 not counting the gunman. >> and they're calling his live-in girlfriend a person of interest. she was out of the country at the time of the shooting but now she's back. for more, let's check in with lana zak. who is live in las vegas at this early morning hours. what can you tell us about the shooter's girlfriend? >> reporter: good morning to you. marilou danley had been together with the shooter for several years, they had apparently met here in las vegas. they had two homes together. they don't know yet why he did what he did. the questions about his motive are still unanswered. and they think that she may be that missing puzzle piece. so she landed a few hours ago at l.a.x. and they are eager to ask her these questions.

>> any word on what the next lead is on this investigation, what the next big thing they're going to be looking for? >> reporter: well, certainly, they want to understand a little bit more about his financial transactions. there are some reports that he had transferred large sums of money over to the philippines. they want to know what that was about. and they really want to know more about what she understood. marilou danley, about why he had all of those weapons. remember, 47 weapons in the three different locations, including some modified guns that were semi, that functioned, then as automatic weapons. >> the girlfriend is now back in this country. and of course investigators will be talking to her in the next few days. lana, thank you. >> and we expect confirmation of the 58 people killed. some of those wounded on sunday night are also starting to tell their stories. >> one of them is sheldon mack who was at the concert, celebratin

abc's david muir spoke with him in his hospital bed. >> it all happened so fast. it seems surreal, so bad. i just keep seeing it in my mind still. it haunts me. >> reporter: and you were seeing people around you? >> yeah, like a girl two rows ahead got hit in the neck. and went down. >> mack was shot twice, once in the arm and in the abdomen. >> he is trying to find a man who got him to the hospital. they say he saved sheldon's life. and president trump is going to meet with the victims of the shooting and first responders. >> yesterday he made a trip to puerto rico to speak with victims of hurricane maria. and at one point he tossed rolls of paper towels out to the crowd. he said the island had gotten off lightly with only 16 dead, but shortly after he left the death toll was raise

>> abc's elizabeth hur has more. >> reporter: president trump in puerto rico as consoler in chief. >> we're going to help you out. have a good time. >> reporter: this during the president's first trip to the u.s. territory, two weeks after hurricane maria, as one emergency official put it, destroyed the island. president trump accompanied by the first lady, even handing out supplies himself, while praising fema and emergency responders. >> great job. great job. and to all of my people -- >> reporter: directly responding to critics slamming the federal response as inadequate and slow. >> this has been a category five, which few people have ever even heard of. a category five hitting land, but it hit land, and boy, did it hit land. >> reporter: the white house maintaining federal help has been delivered and continues to stream in, with thousands of troops and civilians on the ground, delivering more than 1 million meals and 2 million liters of water.

bashed some members of the puerto rican leadership in a barrage of tweets, seemingly making peace on this trip, particularly with the san juan mayor with this handshake. but, again, raising eyebrows after scolding local officials on their budget crisis. >> i hate to tell you, puerto rico, but you've thrown our budget a little out of whack. >> during this trip, president trump did not visit the u.s. virgin islands, but the governor of that territory traveled to puerto rico to meet with the president. >> the president back at the white house for the overnight hours. thank you. and the u.s. has ordered cuba to withdraw more than half of its diplomats from washington. the 15 cubans have seven days to leave the country. the state department says it's in response to a mysterious medical problem affecting st u.s. embassy

it's another sign of rocky relations. jim mattis says it's in the interest of the u.s. to stick with the iran nuclear deal. that came out as he was testifying before the senate arms services committee. president trump has often dismissed the deal as quote, a disaster, but mattis is now the second senior national security team member to contradict him on this. the first was the chairman of the joint chiefs of staff. former president obama had a surprise anniversary greeting for his wife michelle. it happened while the former first lady was taking part in a women's conference in philadelphia. >> she was speaking on stage with shonda rhimes when rimes interrupted the conversation and let the president wish his wife a happy 25th anniversary. >> it's no wonder that when people got to know you the way i know you that they fell in love. and it is truly the best decision i ever made to be

out for a date, that you finally gave in. and i hope that, i hope you feel the same way. >> and michelle obama posted a picture from their wedding day, calling her husband her best friend and the most extraordinary man she knows. >> 25 years. mere kids, the obamas. coming up, the new surveillance video showing the moment a bomb detonated on a packed manhattan sidewalk, as the trial gets under way for the man charged in the worst terror attack since 9/11. and new details about o.j. simpson's parole, but first here's a look at your wednesday forecast.

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rid-x helps break down waste. avoid a septic disaster with rid-x. police body cam video outside of indianapolis capture an officer firing off a shot at what he thought was an armed robber backing out of a bar, but it turns out that map was an actor, shooting a scene for a movie. thankfully no one was hurt, but

the actor in the head. prosecutors say no charges will be filed. the police department says it was never notified about that movie production. there are new clues in what might have triggered the death of a university student during a possible hazing incident. search warrants indicate that the pledges may have been forced to drink alcohol during a drinking game that was referred to in text messages as "bible study." police say 18-year-old maxwell gruber died of an apparent alcohol overdose one day after that incident. new surveillance video has been released of the moment a pressure cooker bomb was detonated last year. >> it comes as the trial of the bombing suspect gets under way. >> reporter: this is the moment a pressure cooker bomb exploded in new york city, burning the faces of stunned pedestrians who turned to run. a saturday night instantly chaotic. the shrapnel spewed all over the block into buildings, cars and three dozen people.

police believe it would have killed had it not been left near this dumpster that absorbed much of the blast. >> i think it's just miraculous no one was killed. >> reporter: surveillance video played at the trial of the alleged bomber, shows ahmed rahimi. he walked four blocks north to drop the second device. it never went off. police believe these two men who admired the bag inadvertently disabled it. rahimmi, who was captured two days later, faces eight counts, temming from the worst terror attack in new york since th9/11. >> he was like anyone else moving through the transit hub and then through the streets of new york. >> reporter: rahimi's trial began on monday. and the dramatic images of the bombing and the aftermath were just the start. thju

sounds of bombs will be heard in the streets." and now to life on the outside for o.j. simpson. >> we're getting our first look at simpson since his release from prison sunday morning. he spent the first few days of his parole laying low, brushing up on his golf game and lounging by the pool. he also spent quality time with his 48-year-old daughter arnell. can't believe arnell's 48 already. >> when we come back, the actor set to play hugh hefner. against limescale. so switch to lysol. what it takes to protect.

♪ skinny ♪ so skinny >> you know, every time we have one of these tragedies as we've had in las vegas, there are so many people who are giving their support and tributes, and the celebrities we're going to start "the skinny" with are doing the same. many tributes pouring in after the shooting. >> donnie osmond and his sister marie have a long-running show in las vegas. and here's what donnie had to say. >> we are not going to allow this tragedy to stop any of us

that great city. >> celine dion has a residence at caesar's, and is continuing her shows as well, and tweeting her support. saying praying for all the innocent victims and their families. >> and taylor swift, here's a cool one. she sent flowers to a los angeles police department after she heard that one of their officers had been injured in the shooting. >> that's really nice. and this is one of the smaller arrangements that you saw there. >> and the music world continues to mourn the loss of tom petty. he died in his home after suffering a cardiac arrest. he's being remembered for his ability to reinvent himself through the years. >> the rock 'n roll hall-of-famer influenced so many singers that we know of today. coldplay, rem took to the stage to honor him. ♪

♪ let's go ♪ free falling ♪ i'm free ♪ free falling ♪ >> coldplay on the stage there in portland, oregon with the ultimate tribute to tom petty. >> well, they say imitation is the best form of flattery. tom, wherever he is, is feeling very flattered. the estate of the late beatle, george harrison tweeted, he had a rocking chair wisdom that brought everything back. we can hear that in his lyrics. >> even actor rob lowe said tom petty was on my mt. rushmore of rock heroes. the writing, the voice, the band, heartbroken. understandably so. it was a shock for so many of us.

old and had played concerts just days prior. >> and inspired so many artists to go into music and produce the kind of music that they did. >> absolutely. well, moving on now. it wouldn't be "the skinny" if we didn't have a celeb possibly testing political waters. so this time it's billionaire businessman mark cuban. >> yeah. so the sometimes shark tank investor said tuesday he's considering a run, but he isn't ready to commit just yet. you may want to grab the popcorn if that does happen, because he and president trump have made no secret of their dislike for each other. >> they hate each other. >> yeah, pretty much that. >> so this will be us. >> jared leno set to star as hugh hefner. in an upcoming bio pick. he's known as immersing himself in his roles. and going full method, as they

>> yeah. we heard pretty interesting stories from "suicide squad", when he was playing the joker. makes you wonder what his method will be for portraying hefner. hugh hefner said he slept with 1,000 women. so it's only acting. >> okay. y. ahead. big plans. so when i found out medicare doesn't pay all my medical expenses, i looked at my options. then i got a medicare supplement insurance plan. [ male announcer ] if you're eligible for medicare, you may know it only covers about 80% of your part b medical expenses. the rest is up to you. call now and find out about an aarp medicare supplement insurance plan, insured by unitedhealthcare surance company. like all standardized medicare supplement insurance plans, it helps pick up some of what medicare doesn't pay. and could save you in out-of-pocket medical costs. to me, relationships matter. i've been with my doctor for 12 years. now i know i'll be able to stick with him.

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taking a look at some of the vigils and memorials we've seen all over the country and the world for that matter following the tragedy in las vegas over the weekend. >> and we're also hearing stories of bravery as the bullets started flying in the air. here's linsey davis. ♪ amazing grace >> reporter: the city of lights, radiating spirit that can't be dimmed. ♪ that saved a wretch one giant embrace for the wound the, tourists and residents alike. hundreds waiting for hours to donate blood. take a look at how many people

all to help people like anthony who was shot in the leg, hit by shrapnel in the face. as he shielded his friend from a shower of bullets. >> two inches to the right and i wouldn't be here. >> reporter: tears and generosity both flowing. the go fund me donations still grows, more than 50,000 people, raising more than $4 million. after the most inhumane acts, an outpouring of love for humanity. linsey davis, las vegas. >> our thanks to linsey davis there. absolutely an outpouring there in that community, from so far away. and we're seeing also the power of social media at play again. this image of 5-year-old adam hugheser was posted to facebook. he had been separated from his mother doris in the chaos. someone saw the photo and they ended up reuniting them with their grandparents. >> this

own. a brandon chase on the ground in las vegas. he captured this moment. a mother and son walked up to a uld give him a hug.ked if they at's all. just wanted to give the officer a hug in a show of support. >> one thing we notice also involving the police officers, that they, someone dropped off pizza at the police station, to try to give them some support and much nourishment there in las vegas. and one of the things we've mentioned about vegas in the past, but it really is worth noting that it seems from somebody from the outside, a soulless city, because it is all about show business and tourists and visitors, but it is a large community, a massive city with many residents. >> and coming together in such a big way. they established a go fund me page to help the victims, they're up to $8.3 million the last time we checked with people all over the world donating. and we saw people lining up to donate blood, food, water. ever

in any way they can. >> don't miss our updates on facebook at wnnfans.com.

making news in america this morning the las vegas shooter's girlfriend returns to the u.s. overnight as police release video showing the chaos officers faced during the rampage. we also have new pictures from inside the shooter's room and how he kept tabs on police with cameras. >> new overnight, president trump speaking about the crisis in puerto rico. the potential cost to american taxpayers and the staggering needs on the island. >> drop the gun now. drop the gun. >> we're doing a movie. >> also this morning a movie mistake. police open fire thinking this was an armed robbery. hear why the actor says he's partially to blame. new details about what caused hugh hefner's death. the unexpected contributing factor.