New Information Changes Timeline of Las Vegas Shooting

WATCH Investigators believe Las Vegas gunman Stephen Paddock may have been struggling with mental health issues prior to Sunday’s massacre

WATCH Investigators believe Las Vegas gunman Stephen Paddock may have been struggling with mental health issues prior to Sunday’s massacre

The Las Vegas gunman opened fire on a security guard six minutes before he rained down bullets on a crowd and killed 58 people, officials said on Monday in a change to the timeline of the deadliest mass shooting in modern US history.

Las Vegas Sheriff Joseph Lombardo had previously travelled to Mumbai after the 2008 attacks, and said the lessons he learned there had helped shape his officers' fast response to Paddock's shooting.

Officials initially said Paddock shot the security guard after he began raining bullets down on the crowd. Six minutes later, Paddock began firing into the crowd at the Route 91 Harvest Festival, authorities said.

Late Sunday night, when exactly a week has passed since the shooting, casino marquees and other lights on the Las Vegas Strip went dark for about 10 minutes to pay tribute to the victims who spent that much time under fire. By the time officers entered the room, Paddock was dead from a self-inflicted gun shot wound.

The gunman's hotel room was on the 32nd floor of the Mandalay Bay hotel with a ideal view of the concert grounds where more than 20,000 people had gathered some 400 yards away for the Route 91 Harvest Musical Festival before Paddock launched his attack.

Lombardo did not address whether the mass shooting could have been prevented based on the new timeline, but said it was unclear why Paddock stopped firing on the concert.

Amid the discovery that the Las Vegas shooter may have researched Fenway Park and other Boston venues just months before carrying out the attack, park officials were not taking any chances for Sunday's game.

The search of Paddock's three-bedroom house on a cul-de-sac in a retirement community in Mesquite, Nevada, was for "re-documenting and rechecking", said local police Chief Troy Tanner, who accompanied Federal Bureau of Investigation agents as they served the search warrant.

Police have not yet revealed a motive for the attack.

Campos immediately alerted the hotel's in-house security team after he was shot at 9:59 p.m., Lombardo said. Campos is shot in the leg and injured.

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Las Vegas gunman shot security guard before firing at concert-goers
Investigators said Paddock acted alone, and Lombardo said they have found "no evidence to show there was a second shooter". It was unclear why Paddock stopped firing at the crowd, suggesting he may have initially planned to escape, Lombardo said.

He declined to discuss the interviews, but said each one was another piece in the puzzle in this case.

Joshua said he saw shell casings all over the floor where Paddock stayed. "We believe he made a decision to take the lives he did and he had a very purposeful plan that he carried out".

"I understand why people are frustrated with this because we are as well", McMahill told KNPR.

During a brief phone conversation with ABC News, Campos said, "I'm fine.I was just doing my job".

He added: "We want to make sure we are putting out the best information we have for everybody".

Over the weekend investigators returned to his home in Mesquite, Nevada, to carry out further searches.

Nevada Lt. Governor Mark Hutchison told CNN on Tuesday that there was a lot of information to evaluate, but acknowledged that Paddock did not stop firing because of the guard, Jesus Campos, as was initially assumed.

"Mr. Campos was encountered by the suspect prior to his shooting to the outside world", Lombardo said at a Monday news conference.

The note was found among 23 firearms, ammunition and the gunman's body, after Paddock took his own life before authorities arrived to the suite.

"We are still speaking with Ms. Danley about the suspect's movement, gun purchases, and anything else we need to know about him and how he planned his assault - and who he came in contact with during the planning the phase", the sheriff said.

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