Updated

FLAGSTAFF, Ariz.-- Authorities say three people are dead and one is critically wounded after a shooting at a motorcycle rally in central Arizona.

The Coconino County sheriff's office says the shooting happened late Friday at a campground at Mormon Lake, about 35 miles southeast of Flagstaff. Authorities say the victims were all participants in the annual "Too Broke for Sturgis" motorcycle rally.

Authorities say two men and a woman were killed.

Sheriff's spokesman Gerry Blair tells the Arizona Daily Sun that another woman from the same group was shot six times. She was taken to a Flagstaff hospital for emergency surgery.

Two other women in the party were also taken to the hospital to be treated for shock.

The victims' names were withheld pending notification of family.

No suspect is in custody, and Blair says officials are investigating the possibility that the shooting was a murder-suicide.