Three transients have been charged in the murders of two people — a backpacker and a yoga instructor — in two separate locations in California.

An arraignment hearing has been set for Wednesday for Sean Michael Angold, 24, Morrison Haze, 23, and Lila Scott, 18. They are currently held in the Marine County jail, according to an Associated Press report.

They are accused of shooting to death a Canadian backpacker in San Francisco and a yoga instructor in Marin County. All of the suspects were charged with two counts of murder with special circumstances, which in this included lying in wait. Such a charge could earn them the death penalty.

Police found the body of 23-year-old Audrey Carey in Gold Gate Park on Oct. 3, where she had a gunshot wound to the head. She was probably camping there during a bluegrass festival.

Authorities found 67-year-old Steve Carter a couple days later on a hiking trail in Marin County, about 20 miles north of the city. He was still holding the leash to his dog, which was wounded from a gunshot.

Police believe the same gun was used in both shooting deaths. It was found after the arrest of the suspects outside Portland. Authorities also say they found Carter’s car and camping gear that belonged to Carey in their possession.