The stepfather of the suspect in the deadly Washington state mall shooting says his stepson has mental health issues.

David Marshall and his wife attended Arcan Cetin's initial court appearance Monday in Skagit County Superior Court. Cetin is facing five counts of premeditated murder following Friday's slayings at the Cascade Mall in the city of Burlington.

Marshall told reporters after the hearing that Cetin "has had mental health issues that we have been working on him with." He didn't provide specifics. He said he and Cetin's mother "are totally devastated by what's happened."

The 20-year-old Cetin was arrested Saturday evening after a nearly 24-hour manhunt.

Authorities are asking that he be held on a $2 million bond.