The Seattle Times via AP, Dean Rutz
Law enforcement officers work at the crime scene outside of Cascade Mall in Burlington, Wash., where several people were fatally shot on Friday, Sept. 23, 2016. Authorities in Washington State say several people have been killed during a shooting at the mall north of Seattle and that at least one suspect remains at large. Sgt. Mark Francis says authorities are searching for a man wearing gray who was last seen walking toward Interstate 5 from the mall.

SEATTLE — Four people have been killed during a shooting at a mall north of Seattle and the suspect remains at large, Washington state authorities said.

The Washington State Patrol said on Twitter that the four were shot Friday at the Cascade Mall in Burlington, about 65 miles (105 kilometers) north of Seattle.

Sgt. Mark Francis said authorities were searching for a man wearing black and armed with a rifle who was last seen walking toward Interstate 5.

Francis said at about 8:30 p.m. that the mall had been evacuated and emergency medical personnel were cleared to enter and attend to any injuries. It wasn't immediately clear if others were hurt.

Stephanie Bose, an assistant general manager at Johnny Carino's Italian restaurant near the Macy's store at the mall, said she immediately locked the doors to the restaurant after hearing about the shooting from an employee's boyfriend.

"He was trying to go to the mall and people were screaming," she said. "It was frantic."

She said he could see police at the doors with assault rifles and said they were no longer guarding the doors as of 9:30 p.m.

The Cascade Mall is an enclosed shopping mall in Burlington, Washington that opened in 1990, according to the mall's website. It features J.C. Penney, TJ Maxx, and Macy's stores, among other stores, restaurants and a movie theater.