A gunman opened fire on thousands of concertgoers jamming the Las Vegas Strip, killing at least 50, wounding 400 more and prompting chaos as the panicked crowd scrambled for cover or simply ducked to avoid the onslaught from the deadliest mass shooting in modern U.S. history.
The massacre ended when police stormed a 32nd-floor hotel room overlooking the concert and the shooter, identified as Stephen Paddock, 64, killed himself, Clark County Sheriff Joe Lombardo said.
"Right now we believe it's a solo act, a lone wolf attacker,” Lombardo said. "We are pretty confident there is no longer a threat.”
Authorities shut down part of the Las Vegas Strip and Interstate 15 after receiving reports of an active shooter at the Route 91 Harvest festival, near the Mandalay Bay Casino, at about 10:10 p.m. local time.
The White House said President Trump "has been briefed on the horrific tragedy in Las Vegas."
"We are monitoring the situation closely and offer our full support to state and local officials. All of those affected are in our thoughts and prayers,” White House press secretary Sarah Sanders said in a statement.
"My warmest condolences and sympathies to the victims and families of the terrible Las Vegas shooting. God bless you!" Trump tweeted.