Police have identified the alleged shooter in the Burlington mall attack as Arcan Cetin, 20, of Oak Harbor, Washington. Multiple reports indicate that Cetin was an immigrant from Turkey — not a citizen, but a legal permanent resident of the United States.
Cetin allegedly killed four women and one man at the Cascade Mall on Friday evening. Local NBC News affiliate KING-5 reports that he used three guns in the attack, all of which had been legally purchased by Cetin’s father, and which he stole.
Police arrested Cetin on Saturday evening as he walked down the street in Oak Harbor. He was reportedly unarmed at the time of his arrest. Law enforcement sources speculated that he may have acted from personal motives, given that his ex-girlfriend had once worked at the Macy’s store where the shooting took place. The investigation is still ongoing, however.