In a press conference on Friday, Las Vegas Metropolitan Police Department Undersheriff Kevin McMahill asked the public to avoid "constant rumor and speculation" as to what Paddock's motives behind the shooting were. "Very clear in most of those cases by a note that was left, by a social media post, by a telephone call that was made, by investigators mining computer data".
LAS VEGAS-U.S. Vice President Mike Pence visited Las Vegas on Saturday stressing unity and offering solace as police appealed to the public for help in uncovering a wealthy retiree's motive for massacring 58 people at an outdoor concert this week.
The Islamic State group has claimed responsibility for the massacre, but McMahill said authorities had not uncovered "no known nexus" between the jihadist group and Paddock.
The Las Vegas Police Department's K-9 unit, said he noticed the paper on the shooter's nightstand, not far from one of the windows Paddock had smashed with a hammer before firing into the unsuspecting crowd below with high-powered semi-automatic rifles.
Earlier reports indicated that Paddock left behind a suicide note.
In an unusual bid to cast a wider net for tips, the Federal Bureau of Investigation and police have arranged with communications company Clear Channel to post billboards around Las Vegas urging citizens to come forward with any information that might help investigators. "And that looked straight, like, out of a movie, you know?'"
Investigators had reviewed voluminous video from the casino and don't think Paddock had an accomplice in the shooting, McMahill said. McMahill said it was also unclear what Paddock meant to do with the tannerite. While overseas, Paddock wired her $100,000, according to authorities.
Police Just Announced What Was On the Las Vegas Shooter's Note
TMZ revealed on Thursday that Paddock rented two hotel rooms at the Blackstone Hotel in Chicago on August 1 and August 3. Danley goes on to says she will "cooperate fully with their (the FBI's ) investigation".
Nearly two dozen firearms and thousands of rounds of ammunition were discovered in the shooter's hotel room.
Paddock's ability to fire hundreds of rounds per minute over the course of his 10-minute shooting spree was a major factor in the high casualty count, police said.
In their effort to find any hint of his motive, investigators were looking into whether he was with a prostitute days before the shooting, scrutinizing cruises he took and trying to make sense of a cryptic note with numbers jotted on it found in his hotel room, a federal official said. The vendor in Phoenix didn't have any, and Paddock did not use any tracer rounds in the attack. Stone, who wrote the book "The Anatomy of Evil", which explores the motivations and mindsets of the world's most prominent killers, said there's a "fascination" with such people. "He's an absolute hero".
Image released by the Las Vegas Metropolitan Police Department of Marilou Danley in connection to a shooting at the Route 91 Harvest Music Festival in Las Vegas on October 2, 2017. She was out of the country at the time of the attacks and has been labeled a "person of interest", though she's not in custody and is cooperating with authorities. (REUTERS/Chris Wattie) Las Vegas police officers walk past a sign at a makeshift memorial set up for the victims of the Route 91 Harvest music festival mass shooting in Las Vegas, Nevada on October 7, 2017.
Flowers and candles are placed at a makeshift memorial for victims of the Route 91 Harvest mass shooting on Wednesday, Oct. 4, 2017 on Las Vegas Boulevard near Mandalay Bay in Las Vegas. (REUTERS/Chris Wattie) White crosses set up for the victims of the Route 91 Harvest music festival mass shooting are pictured in Las Vegas, Nevada on October 7, 2017.
"Psychopath has become a shorthand term for a sadistic, extraordinarily violent individual", Benning told the Las Vegas Review Journal.