'Lone Wolf' Shooter Rampage at Las Vegas Concert

LAS VEGAS - 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.

Las Vegas Metro Police, Sheriff Joseph Lombardo told a press conference. At least 20 people were killed and at least 100 people have also been injured.

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.

There had been reports of other incidents at different locations along the Las Vegas strip, but police said those reports were false. Witnesses reported that hundreds of shots were fired.

Hundreds of people fled the scene and the sound of what appeared to be prolonged automatic gunfire could be heard on videos posted on social media.

Many hotels on the Las Vegas strip close to the scene remain on police lockdown as they search for two vehicles in relation to the attack. Parts of Las Vegas Boulevard were shut as armed officers arrived at the scene.

People have been sheltering in hotels, restaurants and at Las Vegas McCarran airport. A witness, Mike Thompson from London, told the BBC that he saw people running in total panic.

"One man had blood all over him and that's when I knew something was seriously wrong. People were running and there was chaos," he said.