American police aren't ruling out the possibility the Las Vegas gunman had an accomplice.
Stephen Paddock is responsible for the deaths of 58 people in Monday's shooting, with more than 500 injured.
US correspondent Richard Arnold said police chief Joe Lombardo has his doubts about the version of event's supplied by Paddock's girlfriend Marilou Danly.
"He doesn't put much stock into some of the things she's raised, when she had no awareness of anything that was going on."
Sheriff Lombardo says the gunman must have had some help at some point.
LISTEN ABOVE AS RICHARD ARNOLD SPOKE TO LARRY WILLIAMS