The sheriff also confirmed investigators are talking with Paddock’s brother Eric Paddock, who traveled to Las Vegas, and continue to speak with the shooter’s girlfriend, Marilou Danley, to get insight. Investigators believe the numbers represented calculations for more precise shots, according to a law enforcement official who wasn’t authorized to discuss the details of the ongoing investigation publicly and spoke on condition of anonymity. Authorities didn’t find a note in his room, only a paper with numbers, he said. The sheriff added that a complete evaluation of Paddock’s mental condition was not yet done.

Lombardo said police and FBI agents, including behavioral profilers, still haven’t found a particular event in Paddock’s life that might have triggered the shooting. Investigators have found 200 incidents of Paddock moving through the city, and at no time was he with anyone else, Lombardo said. There is still no evidence Paddock was motivated by ideology, or that there was another shooter, he said. “We believe he decided to take the lives he did and he had a very purposeful plan that he carried out.”

“It’s because this individual purposely hid his actions leading up to this event, and it is difficult for us to find the answers to those actions,” Lombardo said. Lombardo again expressed frustration with the pace of the investigation, but not with the investigators who have yet to pinpoint the motive behind the shooter’s decision to fire from the 32nd floor of the Mandalay Bay hotel casino on a Las Vegas Strip concert crowd of 22,000 on Oct. He also drilled holes and bolted a metal bar to try to prevent the opening of an emergency exit stairwell door near the door of his room. Paddock had power tools and was attempting to drill a hole in an adjacent wall, perhaps to mount another camera or to point a rifle through, but he never completed the work, Lombardo said. Authorities also said Monday that Paddock targeted aviation fuel tanks, stocked his car with explosives and had personal protection gear as part of an escape plan.

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