Las Vegas gunman emailed about bump stocks months before rampage: documents

(Reuters) - Three months before killing 58 people and wounding more than 500 in Las Vegas last October, the gunman behind the deadliest mass shooting in U.S. history sent emails discussing buying bump stocks, which can make semiautomatic rifles fire hundreds of rounds a minute, media reports on unsealed search warrants showed.

Bump stocks believed to be used in the massacre were found in the 32nd-floor hotel room from where Stephen Paddock fired down on a crowd gathered on a Sunday night for the finale of a country music festival held on the Las Vegas Strip.

The details suggesting the attack may have planned months in advance were part of more than 300 pages of search warrants unsealed by a federal judge in Nevada on Friday, according to the Los Angeles Times, one of several publications that sought release of the documents.

RELATED: What we know about Las Vegas shooting suspect Stephen Paddock

What we know about Las Vegas shooting suspect Stephen Paddock
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What we know about Las Vegas shooting suspect Stephen Paddock
Stephen Paddock, 64, allegedly opened fire from the Mandalay Bay Resort and Casino on the Route 91 Harvest country music festival, leaving at least 59 people dead and hundreds injured.

(Social media/Handout via REUTERS)

He reportedly used a hammer-like tool to break out two windows at the Mandalay Bay Resort and Casino.

(Photo by David Becker/Getty Images)

Stephen Paddock was reportedly a high-stakes gambler that lived in a retirement community in Mesquite, Nevada.

(REUTERS/Las Vegas Sun/Steve Marcus)

His father was Benjamin Hoskins Paddock, a bank robber and former FBI Most Wanted Fugitive.

(FBI/Handout via REUTERS)

Paddock killed himself before authorities breached his hotel room and investigators say he acted alone.

(REUTERS/Las Vegas Sun/Steve Marcus)

Paddock's girlfriend, Marilou Danley, was in the Philippines at the time of the shooting but he reportedly used her identification to check in at the Mandalay Bay hotel.

(Las Vegas Metropolitan Police Department/Handout via REUTERS)

Stephen Paddock lived in this home in Melbourne, Florida from 2013 to 2015.

(Joe Burbank/Orlando Sentinel/TNS via Getty Images)

Police said Paddock had no criminal record.

(Photo by David Becker/Getty Images)

NBC News reported that Paddock made several large gambling transactions in recent weeks, but that it wasn't clear if they were wins or losses.

(Photo by David Becker/Getty Images)

Paddock reportedly purchased firearms at  Guns & Guitars, a gun shop in Mesquite, Nevada. 

(Photo by Gabe Ginsberg/Getty Images)

Paddock's brother, Eric, said his sibling belonged to no political or religious organizations, and had no history of mental illness.

 (Photo by Marcus Yam/Los Angeles Times via Getty Images)

Paddock's brother described him as a "wealthy guy" and said he liked to play video poker and go on cruises.

(Photo by Gabe Ginsberg/Getty Images)

He worked as an accountant and had real estate investments, according to the Washington Post. 

(Photo by Drew Angerer/Getty Images)

Paddock had his pilot license and owned at least one plane, according to Reuters.

(REUTERS/Lucy Nicholson)

Reuters was unable to obtain a copy of the documents on Friday night.

The unsealed documents do not provide a motive for the killings, the Los Angeles Times reported.

Paddock shot and killed himself before police arrived at his hotel room the night of the shootings.

The documents also showed that Paddock's girlfriend, Marilou Danley, told investigators before they searched a house that the two shared that they might find her fingerprints on ammunition "because she occasionally participated in loading magazines," the Las Vegas Review-Journal reported.

In the days after the shootings, authorities called Danley a "person of interest." Her attorney has said she had no inkling of Paddock's plans.

Documents posted online by the Review-Journal showed that FBI agents sought information from Microsoft and Facebook regarding the accounts held by Paddock and Danley.

Microsoft and Facebook did not immediately respond to emails and calls from Reuters on Friday night.

An unsealed search warrant shows that an email sent July 6, 2017 from an account linked to Paddock to an address that he may also have controlled discusses the use of bump stocks "for a thrill," according to an affidavit posted by the Las Vegas Review-Journal.

The emails also mentioned trying out an AR-style rifle before purchasing one.

The Los Angeles Times reported that investigators are not sure why Paddock would send emails between accounts he controlled, or whether one was controlled by another person, which would mean, "investigators need to determine who was communicating with him about weapons that were used in the attack," one of the warrants said.

(Reporting by Bernie Woodall in Fort Lauderdale, Fla.; Editing by Simon Cameron-Moore)

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