Las Vegas gunman may have planned escape, had help: Sheriff

Here's the latest on the investigation into the Las Vegas shooting:

  • There is evidence the gunman, Stephen Paddock, planned to escape, Clark County Sheriff Joseph Lombardo said.

  • At least 59 people, including the shooter, died after Sunday night's attack at a Las Vegas music festival.

  • The motive remains unknown, but the city's police chief said the assault was "obviously premeditated."

  • Paddock was seen gambling for eight hours straight on the night before the shooting.

  • Paddock reportedly had been stockpiling firearms since 1982 and purchased 33 guns in the past year.

  • Authorities said they have recovered 47 firearms so far from three locations connected to Paddock.

  • Paddock's girlfriend returned to the U.S. from the Philippines and will be questioned by the FBI this afternoon.

  • Paddock may have visited several music festivals in the Vegas area, investigators say.

Meticulous planning preceded 'premeditated' shooting

As investigators delve deeper into how Sunday night's massacre in Las Vegas unfolded, more chilling details have emerged about the suspected gunman and how he allegedly carried out the deadliest mass shooting in modern U.S. history.

Authorities said Paddock opened fire on a music festival crowd from the 32nd floor of the Mandalay Bay Resort and Casino, killing 58 people and injuring 489 others, a decrease from original reports after officials double-checked numbers. The shooting lasted nine to 11 minutes, with the first reports of gunshots beginning Sunday at 10:05 p.m. PT and the final shots being fired at 10:15 p.m.

Paddock is believed to have been solely responsible for the attack, according to police.

Speaking this evening, Lombardo said that there is evidence that indicates Paddock, a 64-year-old resident of Mesquite, Nevada, planned to escape.

However, Lombardo did not provide any details on what the evidence was or why he believes that.

Lombardo added that there are indications Paddock had some kind of help.

Paddock checked into the Mandalay Bay Resort and Casino on Sept. 28, bringing 10 bags and at least 23 guns, including high-power rifles. He set up surveillance cameras inside and outside his two-room suite. There was one camera on a room service cart in the hallway outside his suite, police said.

One official said he also had a camera mounted in the room, apparently to record himself.

Paddock was shuttered inside his suite for three days at the giant hotel-casino, perched high above the site of the Route 91 Harvest Festival, taking place across the street. Room service was provided at some point during his stay.

A search into Paddock's car, which was parked at Mandalay Bay, revealed several cans of tannerite as well as 1,600 rounds of ammunition, Lombardo said Wednesday afternoon.

Investigators believe Paddock used a device similar to a hammer to smash two windows in his rooms before he allegedly opened fire on the music festival crowd, shortly after a rendition of "God Bless America."

Police responded to the hotel room, where Paddock was found dead. He is believed to have killed himself before police entered.

Law enforcement sources told ABC News that Paddock utilized at least one camera outside the suite possibly to monitor approaching authorities.

"I anticipate he was looking for anybody coming to take him into custody," Lombardo said at a news conference Tuesday.

Lombardo said authorities are reviewing police body cameras.

While the motives behind the deadly rampage remain unclear, Lombardo said the attack was "obviously premeditated" and the shooter "evaluated everything he did."

Sen. Richard Burr, R-N.C., the chairman of the Senate Intelligence Committee, told a news conference today that the shooting "doesn't seem to have a terrorism nexus."

ABC News has obtained images from inside Paddock's hotel room. A body, believed to be Paddock's, is partly visibly in one of the photos.

The images also show rifles and bullet shells scattered across the floor, with high-capacity magazines stacked like bricks in a corner.

WARNING: Images may be disturbing to some readers.

An employee at the Mandalay Bay Resort and Casino told ABC News she spent a total of 16 hours serving Paddock in the casino during her shifts there over the weekend. She said she watched him gamble for eight hours straight, from Saturday night to Sunday morning.

He played high-stakes video poker on machines in a separate, "exclusive" section of the casino, she said.

As soon as she saw Paddock's picture on the news, identifying him as the suspected gunman, she said she knew it was the man who was her customer the night before the shooting.

A 'plethora' of guns and ammo

Authorities have executed search warrants at three locations and for Paddock's vehicle parked at the Mandalay Bay Resort and Casino.

In addition to the 23 guns recovered from Paddock's hotel room - which police said were purchased in Nevada, California, Utah and Texas - authorities found a computer and several pieces of media there. Law enforcement sources said multiple loaded high-capacity magazines and a modified bump stock rifle, which allows a gun to stimulate rapid automatic gunfire, were discovered in the room as well.

Investigators are still in the process of examining the firearms to determine whether they were capable of firing automatically.

Meanwhile, material used to make explosives was found in Paddock's car. Explosive material and 19 additional firearms were discovered at Paddock's home in a Mesquite retirement community.

Five handguns, two shotguns, numerous electronics and a "plethora of ammunition" were found at his property in Reno, according to Lombardo.

Jill Snyder, the special agent in charge at the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives, told "CBS This Morning" in an interview today that Paddock had been stockpiling firearms since 1982. He bought nearly 50 guns legally, she said, but none of those purchases set off any red flags for the ATF.

"From October 2016 to Sept. 28, 2017, he purchased 33 firearms, majority of them rifles," Snyder said. "We wouldn't get notified of the purchases of the rifles. We would only get notified if there was a multiple sale, which would be two or more handguns in an individual purchase."

Suspect's girlfriend arrives back in U.S.

Investigators say Paddock's girlfriend, Marilou Danley, who lived with him at his home in Mesquite, is more than a mere witness.

"Currently she's a person of interest," Lombardo said at the news conference on Tuesday.

Danley, 62, returned on Tuesday night to the U.S. from the Philippines, where she was born, landing at Los Angeles International Airport at 7:17 p.m. PT on Philippine Air Flight 102.

She was taken out a back way so she wouldn't be seen in public, and FBI agents met her upon landing, multiple law enforcement sources told ABC News.

Police told reporters this afternoon that detectives would begin questioning Danley soon.

The law offices of Matthew Lombard confirmed for ABC News this afternoon that she is at the FBI field office in Los Angeles with Lombard, who is representing her.

Danley is not in custody and is free to go where she pleases. Investigators hope she can shed some light on the motivations behind Paddock's massacre over the weekend.

In an interview with ABC News today, Danley's elder brother Reynaldo Bustos said he immediately contacted his sister when he saw the news that her boyfriend was allegedly behind the deadliest mass shooting in modern U.S. history.

"I called her up immediately, and she said, 'Relax. We shouldn't worry about it. I'll fix it. Do not panic. I have a clean conscience,'" Bustos said today outside Manila in Tagalog, his native language.

Paddock may have visited other festivals

Over the last several months, Paddock may have visited several music festivals in the broader Vegas area, officials briefed on the investigation told ABC News, adding that it's thought that all of them were within driving distance of Las Vegas.

Investigators believe Paddock started making regular visits to Mandalay Bay on Sept. 3 through the rest of the month. Paddock was known at "most of the big casinos" on the strip because he was a big player who came in a lot, the officials said.

Authorities are also looking into whether Paddock tried to secure a room at the El Cortez Hotel and Casino, located on the opposite side of the Las Vegas Strip from the Mandalay Bay Hotel and Casino, on the weekend that the Life Is Beautiful music festival took place, between Sept. 22 and Sept. 24, the officials said.

Paddock had rented a room at the Ogden Hotel in downtown Las Vegas the weekend of the Life Is Beautiful music festival, Lombardo said Wednesday. Authorities have recovered items and surveillance video from the weekend he stayed there, Lombardo said.

ABC News' Anna Marie Cerezo, Jack Date, Matt Gutman, Meghan Keneally, Alex Stone and Pierre Thomas contributed to this report.

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