At least 50 people have been killed and another 200 have been injured in a mass shooting at a Las Vegas concert, BBC reports .
A gunman, named as 64-year-old Stephen Paddock, opened fire from the 32nd floor of the Mandalay Bay Hotel toward an open-air music festival.
Police said a suspect identified as a local resident was 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.