Stephen Paddock, who killed 58 people and injured more than 800 in the October 2017 shooting spree in Las Vegas, was a gambler, obsessed with cleanliness, possibly bipolar and having problems with his girlfriend, media reports said, citing the results of a three-month police investigation.
During a press conference, Clark County Sheriff Joe Lombardo said investigators had "gone over 2,000 leads and looked at 21,560 hours of video". Meanwhile, all 22,000 people attending the festival that night are recognized as victims.
Paddock's girlfriend, Marilou Danley, tells investigators that Paddock had grown more and more distance in the months before the attack and that she knew he had bought a large number of guns, which she believed was just a hobby.
But he disclosed that the FBI is investigating an individual of federal interest related to the case. "Paddock would move from window to window looking at the site from different angles", according to the report.
Paddock, who killed himself before police reached him, told friends and relatives that he always felt ill, in pain and tired, authorities said.
The preliminary report said police had found "several hundred images" of child pornography on a computer hard drive when they searched the four laptops belonging to Paddock, but officers are still investigating the source of the images. The doctor offered him antidepressants, but Paddock accepted only a prescription for anxiety medication. But Paddock had paid off his gambling debts before the shooting, according to the report. One Google query was "how crowded does Santa Monica Beach get".
In May 2017, Paddock's internet search history included the terms "La Jolla Beach", "biggest open air concert venues in United States of America", and "how crowded does Santa Monica Beach get", according to documents made available by the Las Vegas Metropolitan Police Department.
Paddock also googled "How tall is Mandalay Bay" by his Dell laptop, the report said.
Fifty-eight people died in the massacre by gunman Stephen Paddock, who opened fire on concert-goers from a 32nd-floor suite at the Mandalay Bay hotel on the Las Vegas strip in October.
The Las Vegas Police Department broke its own protocol Friday by releasing a preliminary report of the country's deadliest mass shooting.
"But even more troubling than that, I've been made aware of what I believe to be credible evidence, credible information, regarding terrorist infiltration through the southern border regarding this incident", he said. "Unless you have specific evidence, it seems a bit irresponsible to make that allegation or make that assertion", she said.