Police have revealed the man behind America's worst ever mass shooting had more than 40 guns.
They've discovered 19 firearms at Stephen Paddock's home - on top of 23 found in the hotel room where he fired on crowds at a music festival.
He killed at least 59 people and injured more than 500.
Police say they still don't know why he did it, but there's speculation the millionaire investor had built up gambling debts.
His brother Eric can't think of a motive either:
Meanwhile, vigils have been held in Las Vegas to remember the 59 people in killed.
#VegasStrong @unlv pic.twitter.com/LIm5s0NJJ1
— Evan Posocco (@evanposocco) October 3, 2017
