Before committing the deadliest mass shooting in modern US history at the Route 91 Harvest festival in Las Vegas on Sunday night, Stephen Paddock may have had his eyes set on a different Las Vegas music festival, The Daily Beast reported.

A law-enforcement source told the outlet that Paddock had rented condos overlooking the Life Is Beautiful festival, which took place in Las Vegas in late September.

The annual festival was headlined this year by Chance the Rapper and Lorde.

On Thursday, days after the Life Is Beautiful festival, Paddock checked into a room on the 32nd floor of the Mandalay Bay Resort and Casino. Three days later, from a broken window in his room, he shot into a crowd of about 22,000 concertgoers during the performance of the Route 91 Harvest festival's headliner, Jason Aldean. Paddock's shooting spree left 59 people dead and more than 520 others injured.

Police recovered a total of 42 guns from Paddock's home and hotel room. His motive remains unclear.