The shooter, Steven Paddock reserved two rooms at The Blackstone Hotel during this summer's Lollapalooza Music Festival that took place from August 3 -6. He reportedly told reservation staff that he had met his wife at Lalapalooza and that it was imperative that their room have a view of the music event.
In the days following the horrific shooting, it was reported that Paddock, who was found dead shortly after the massacre, had been planning to attack concert-goers at the Life Is Beautiful Festival, which was headlined by Chance The Rapper.
Construction crews repaired the holes after the FBI had investigated, the Las Vegas Review Journal reported.
Paddock successfully managed to hit the tanks, but failed to penetrate them during the massacre on Sunday.
Meanwhile, Clark County Sheriff Joseph Lombardo said that there is evidence that indicates Paddock planned to escape from police after the shooting.
Authorities discovered Paddock's interest in the two cities by examining his communications and electronic equipment, NBC News said.
Authorities still have no idea what caused retired accountant and chronic gambler Stephen Paddock to snap.
About 400,000 people, including Barack and Michelle Obama's oldest daughter, Malia, attended the festival, which showcased artists like The Killers, Muse and Lorde.
At a press conference, Federal Bureau of Investigation special agent Aaron Rouse said that they have yet to find a link to terrorism. They then breached the door to the second room in the suite, but no one was there. He later booked a second room for August 3 through August 6, the same days as Lollapalooza in Grant Park. The rooms were not rented directly from the Odgen, but through an Airbnb account run by someone living there.
Because so few people knew Paddock well, investigators will have a harder time probing his background for clues or hints he may have dropped about his plans, Southers said. But investigators have been frustrated to find that he lived a "secret life", Lombardo said, "much of which will never be fully understood". Paddock apparently used such devices during the bloodbath. Lombardo gave no details on what Paddock was up to.
Authorities revealed on Wednesday night that they found 1600 rounds of ammunition and 50 pounds of explosives in Paddock's auto.
Investigators have zeroed in on a weapon-buying binge Paddock went on in the year before the attack.
An unnamed law enforcement source also told NBC News, in a story published Tuesday, that police were investigating whether Paddock considered attacking an earlier music festival in Las Vegas, the Life Is Beautiful festival, which occurred September 22-24.