More than twenty people have been killed and at least 100 injured in a mass shooting at a Las Vegas concert.
A gunman opened fire from the 32nd floor of the Mandalay Bay Hotel toward an open-air music festival being held close by.
Police said a suspect identified as a local resident, who was not named, had been shot and killed by officers.
They said they were looking for a companion travelling with the suspect as a "person of interest".
Sheriff Joe Lombardo said police believed the shooting was a "lone wolf" style attack, but confirmed they were trying to locate an Asian female named as Marilou Danely.