MOUNT VERNON, Wash. — A man charged with five counts of first-degree premeditated murder in the shooting deaths of five people at a Washington state mall shared an early dinner with his stepfather then told him he was headed to his job at a gym.

Instead, police say, Arcan Cetin headed to the Cascade Mall in Burlington, pulled a Ruger rifle from his trunk and opened fire in a Macy’s department store, instantly killing three women and a teenage girl and critically wounding a man who died hours later.

As the small city an hour north of Seattle struggled to make sense of the carnage, an unsettling portrait emerged of the man authorities say was the shooter.

Cetin, 20, of Oak Harbor has a criminal record dating back at least two years and was charged last year with assaulting his stepfather, who said his stepson suffered from mental illness.

One of Cetin’s neighbors at an apartment complex said he unnerved her so much that she kept a stun gun near her front door.

On Monday, Cetin expressed no emotion when asked by a judge if he understood his rights. Bail was set at $2 million and his lawyer said nothing about his client in court and did not speak with reporters.