Country Festival May Not Have Been Las Vegas Gunman's Initial Target

Las Vegas mass murderer slaughtered more innocents than Omar Saddiqui Mateen, 29, who killed 49 people when he opened fire inside the LGBT nightclub.

Before the deadliest mass shooting in modern USA history, the Las Vegas gunman checked into the Mandalay Bay Hotel, requesting an upper-floor room with a view of the Route 91 Harvest Music Festival, according to a person who has seen hotel records turned over to investigators.

Paddock rained bullets down on festivalgoers from a nearby hotel building, killing 58 and injuring hundreds more. His rooms at the Blackstone Hotel faced the park and were booked for Aug. 1 through Aug. 6 and Aug. 3 through Aug. 6, respectively, according to TMZ.

Stephen Paddock is the man responsible for America's worst ever mass shooting.

A Chicago hotel where a law enforcement official says Las Vegas gunman Stephen Paddock booked a room in August says no one by that name stayed at the hotel. Lombardo said at a news conference.

Las Vegas police stand guard along the streets outside the the Route 91 Harvest country music festival grounds.

The dates the reservations were made, July 23 and 27, show that Paddock spent quite some time planning his attacks but it is unknown why he chose not to go through with this particular attack. She said she had no inkling of his murderous plans.

The official was not authorized to discuss the case publicly and spoke on condition of anonymity after being briefed on the investigation. He says investigators have recovered items and video from the hotel. "We don't know yet", Lombardo said.

Meanwhile, Paddock's girlfriend Marilou Danley has arrived back in the United States for questioning - releasing a statement in which she has claimed that she was "sent away" to the Philippines by Paddock to prevent her from thwarting his plans.

Discerning Paddock's motive has proven especially baffling as he had no criminal record, no known history of mental illness and no outward signs of social disaffection, political discontent or extremist ideology, police said.

Danley, who was overseas for more than two weeks, said she was initially pleased when she was wired money from Paddock to buy a house for her family in the Philippines.