Suspect may have attempted gun purchase hours before mall shooting (VIDEO)

The suspected Cascade Mall killer walked into an Island County gun store and tried to buy a large caliber handgun just two hours before the shootings that killed five people.

“He seemed off from the moment he walked in,” said gun store clerk Aaron Wilson.

Wilson says Arcan Cetin asked if the store “sells 45’s and stuff,” referring to the caliber of the weapon he wanted.

Cetin is accused of killing five people at Cascade Mall in Burlington Friday night around 7 p.m. using a .22 Ruger hunting rifle and 25-round ammunition magazine that he stole from his stepfather.