What happened inside the shooter's suite at the Mandalay Bay hotel

What happened inside the shooter's suite at the Mandalay Bay hotel

Accused Las Vegas mass shooter Stephen Paddock researched possible locations in Boston and Chicago, including the Lollapalooza music festival, senior law enforcement officials told NBC News.

A total of 47 guns have been recovered from three locations: Paddock's hotel room and his two Nevada homes in Verdi and Mesquite.

The officials said he researched the Lollapalooza concert event in Chicago, which is held Aug. 3-6, NBC News reported.

Authorities said on Tuesday that Paddock had cameras set up both inside and outside the hotel room, ABC News reports.

The mass murderer had no criminal record but his father Benjamin Paddock was once one of the most wanted criminals in the US.

The gunfire that interrupted the Route 91 Harvest country music festival was initially mistaken for fireworks, and then concertgoers "realized it was apparent gunfire".

Lombardo also hit out at the media over its handling of the shooting, criticizing a German newspaper over its decision to publish photos from Paddock's hotel room.

"I will cooperate fully with their investigation", she said in the statement. Paddock lived in Mesquite, Nevada, about 35 miles from St. George.

- A North Las Vegas gun store sold a shotgun and a rifle to Paddock in the spring.

Authorities found 19 more guns at his home in Mesquite, as well as explosives and thousands of rounds of ammunition.

The Frasers said they intended to stick around their hotel until their flight out of the city today. He said that there are uniformed security guards checking room keys prior to allowing guests to access the hotel's elevators.

Information on Stephen Paddock in the internet space essentially doesn't exist, Eric told reporters. One manufacturer, Slide Fire, posts a letter from the Bureau of Alcohol, Tobacco and Firearms explaining how and why the devices are legal: "The stock has no automatically functioning mechanical parts or springs and performs no automatic function when installed".

Investigators trying to establish the motive for the attack have had little more to chase than hints and shadows.

- A team of six officers spoke with security at the Mandalay Bay Resort and Casino, where Paddock was staying, and searched the hotel floor-by-floor Sunday night before they encountered him, Clark County Sheriff Joseph Lombardo told reporters.

Paddock was already dead from a self-inflicted gunshot wound.

But who is Aldean, the singer who was performing onstage when the shooting happened? Soon, the footage went dark as an officer shielded a woman, authorities said.

Former FBI hostage negotiator Clint Van Zandt said Paddock doesn't seem like your typical mass shooter - as he's older and not known to have a mental illness. "The last time she talked to him, no indication of anything". "Who would have ever imagined this situation", Lombardo said of the mass shooting. The shooting continued off and on for nine to 11 minutes, he said. "We call upon the bonds of citizenship, the ties of community, and the comfort of our common humanity".

Investigators looking into Paddock also came across mention of Fenway Park, Boston police Lt. Detective Mike McCarthy said, though he provided no further details. He did it mathematically. The brother was apparently also shocked for Stephen having so many "machine guns".

In an interview with CNN affiliate Seven Network Australia, Danley's sisters said that Danley did not know about the shooting and was "sent away" before the attack.