Authorities are pictured at the Cascade Mall following reports of an active shooter in Burlington, Washington, on Sept. 23. Reuters

Police in Washington state have identified the man they say killed five people at a mall near Seattle Friday night. Arcan Cetin, age 20, is accused of opening fire in a Macy's at the Cascade Mall in Burlington just before 7 p.m. local time Friday.

Mount Vernon Police Lt. Chris Cammock told the Associated Press Cetin went into the mall twice Friday night: once weaponless, and once with a "hunting type" rifle. He fatally shot four women and one man before fleeing the scene.

The escape caused police to launch a massive manhunt that lasted well into Saturday. Washington State Patrol Sgt. Mark Francis tweeted that the suspect was a "Hispanic male wearing gray" and urged people to help him identify Cetin from security camera screengrabs.

"The weapon has been recovered; however, the suspect is still at large," the Skagit Multiple Agency Response Team wrote in a Saturday morning news release.

Cetin's motive is still unknown, though officials have said they do not think the massacre was related to terrorism, NBC News reported. The Seattle FBI office, which is helping local forces with the investigation, tweeted that it had "no information to suggest additional attacks planned in [Washington] state."

An FBI study of 160 active shooter incidents between 2000 and 2013 found that about 4 percent of shootings took place in malls. In those cases, "it appeared the shooters were neither employed by businesses in the affected malls nor had relationships with mall employees," the report read.

The Washington mall shooting coincides with an ongoing investigation into a mall stabbing last week in St. Cloud, Minnesota. Authorities alleged Dahir Ahmed Adan stabbed nine people before he was fatally shot by a police officer.

The FBI labeled the incident "a potential act of terrorism," and the Islamic State group has claimed responsibility, according to CNN.