Las Vegas killer described his unusual habits in 2013 testimony

LAS VEGAS -- (WPIX) -- He was a nocturnal creature who gambled all night and slept all day.

He took Valium at times for anxiousness, and had the doctor who prescribed it to him on retainer.

He wagered up to a million dollars a night, but wandered around glitzy Las Vegas casinos in sweatpants and flip-flops, and carried his own drink into the high rollers' area because he didn't want to tip the waitresses too much.

This was Stephen Paddock as he saw himself four years before he opened fire on a crowd of concertgoers, killing at least 58 people in the worst mass shooting in modern American history.

The details are contained in a 97-page court deposition obtained exclusively by CNN. Paddock was deposed October 29, 2013 as part of a civil lawsuit against the Cosmopolitan Hotel, where he slipped and fell on a walkway in 2011.

What otherwise would have been a mundane proceeding offers fresh details about Paddock's life and habits — for the first time — from the killer's own mouth. The document has been turned over to the FBI, according to sources.

Kept doctor 'on retainer'

Paddock's testimony offers little insight into what could have prompted last week's attack. He said that he had no mental health issues, no history of addiction and no criminal record.

He said he was prescribed Valium “for anxiousness” by Nevada internist Steven P. Winkler. It was unclear how often he took the drug, but he estimated that he had 10 or 15 pills remaining in a bottle of 60 that were prescribed a year and a half earlier.