Updated: More Than 50 Dead, 200 Injured After Vegas Shooting

More than 50 people are dead and nearly 200 are injued after a horrific attack on the Las Vegas Strip.

This is now the deadliest mass shooting in US history. 

Police say that a gunman on 32nd floor of hotel across from outdoor concert open fire on people.

He has since been killed.

Two of the dead were off-duty police officers.

Authorities did not release the suspect's name but said he is a local resident.

While police believe this was a "lone wolf" attack but said they were looking for a roommate of the dead suspect as a person of interest. 

More to come...