The brother of the suspected gunman in the Las Vegas mass shooting said his brother was "not an avid gun guy at all."

"Where the hell did he get automatic weapons. He has no military background or anything like that," Eric Paddock said Monday on CBS News.

"He's a guy who lived in a house in Mesquite and drove down and gambled in Las Vegas."

“Not an avid gun guy at all...where the hell did he get automatic weapons? He has no military background,” gunman’s brother says pic.twitter.com/EMSKLQGYFM — CBS News (@CBSNews) October 2, 2017

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At least 58 people were killed and hundreds were injured after a gunman opened fire Sunday night at a country music festival in Las Vegas.

The suspected gunman was identified as Stephen Paddock, 64, a Nevada resident. He was found dead in his hotel room.

Authorities in Mesquite told CBS News they had no contact with the suspected gunman.

Several lawmakers have since called for Congress to take action on gun violence in the wake of the deadliest mass shooting in U.S. history.