From Arutz Sheva:
While initial reports claimed Paddock was a recent convert to Islam, Clark County Sherrif Joseph Lombardo said he had no knowledge of Paddock's religious beliefs.
"As far as his history and his background, we haven't completed that part of the investigation yet."
"We have no idea what his belief system was."
http://www.israelnationalnews.com/News/News.aspx/236219