Washington

Police reviewing gun store video in mall shooting case

Arcan Cetin is escorted into Skagit County District Court by Skagit County's Sheriff's Deputies on Monday, Sept. 26, 2016. Cetin is being held under a magistrate's warrant which will give Skagit County prosecutors 30 days to file charges in relation to the Cascade Mall shooting that took place on Friday evening. Five people were killed in the shooting, and Cetin is being held on a $2 million bail. (Brandy Shreve/Skagit Valley Herald via AP)

Arcan Cetin is escorted into Skagit County District Court by Skagit County's Sheriff's Deputies on Monday, Sept. 26, 2016. Cetin is being held under a magistrate's warrant which will give Skagit County prosecutors 30 days to file charges in relation to the Cascade Mall shooting that took place on Friday evening. Five people were killed in the shooting, and Cetin is being held on a $2 million bail. (Brandy Shreve/Skagit Valley Herald via AP)  (The Associated Press)

Detectives are investigating a tip that the suspect in a deadly mall shooting north of Seattle may have tried unsuccessfully to purchase a handgun just hours before the slayings occurred.

Authorities say Arcan Cetin used a .22-caliber Ruger rifle when he opened fire Friday at the Cascade Mall in Burlington, Washington, killing five. Cetin's stepfather told detectives after the shootings that his Ruger rifle and .22-caliber ammunition were missing.

Skagit Multi-Agency Response Team spokesman Sgt. Mark Francis said Thursday that authorities are investigating whether the 20-year-old tried to buy a weapon from a gun store and are reviewing store video.

Cetin, who has a criminal record dating back at least two years and was charged last year with assaulting his stepfather, was under a court order not to possess firearms.