Police pleaded with the public for help identifying a gunman who fled after killing four women and a man at a Washington state mall Friday night.
The suspect, dressed in a black T-shirt and black shorts, was seen on surveillance footage at the Cascade Mall in Burlington, about 65 miles north of Seattle, where he opened fire inside a Macy's department store.
Authorities are still working to determine a motive and said there's no immediate evidence the rampage was terror-related.
"This was a senseless act," Burlington Mayor Steve Sexton said at a Saturday morning press conference, adding his town would do everything possible to help law enforcement "bring this son of a b---- to justice."
Authorities don't know the gunman's whereabouts or identity, but believe he is a Hispanic man in his 20s or 30s.
"Hopefully people who know and recognize this individual will help us," Mt. Vernon Lt. Chris Cammock said at the press conference.
Security footage showed the man entering the mall, apparently without a weapon. In additional footage from about 10 minutes later, he "entered Macy's with a rifle and fired multiple times," Cammock said.
The shots killed the four females — who ranged in age from one in her teens to another who was a senior citizen — in the store. The man suffered critical injuries but later died.
A rifle was recovered at the scene, Cammock said, but he refused to disclose how many shots were fired or what the caliber of the weapon was due to the ongoing investigation.