Authorities say a wounded security guard shot back and killed a public transit passenger who opened fire when he was kicked off a bus on the Las Vegas Strip.

Police say the shooting happened a little before 2 a.m. Monday in the heart of the tourist district. Part of the Strip has been closed to traffic.

Investigators say a security officer contracted by the Regional Transportation Commission told a passenger to get off the bus because of a disturbance.

Police say the man then pulled a handgun and shot the security officer multiple times.

The officer fired back, fatally wounding the suspect.

The guard was taken to a hospital. Lt. Dennis O'Brien says the guard is in stable condition with injuries that are not life-threatening.