(PORTLAND, Ore.) -- At least one person is dead and several people are wounded after a masked shooter opened fire Tuesday at Clackamas Town Center, a mall in suburban Portland, Ore.
Police said the shooter had been "neutralized," but would not say whether the person was alive or dead.
"This is no longer an active shooter," Clackamas County Sheriff's Office spokesman Lt. James Rhodes said. "I believe the shooter has been neutralized and we are securing the mall, securing the scene and treating the wounded."
He said there was not an exact count yet of those killed or wounded.
"We know there are multiple wounded," he said. "Lifeline has landed to treat at least one of those wounded and we're set up to treat them as we find them as we search the mall."
Witnesses reported seeing a gunman who looked like a teenager wearing a bulletproof vest and carrying an assault rifle.
Hundreds of people were evacuated from the busy mall full of holiday shoppers after the shooting began at around 3:30 p.m.
Witnesses described seeing someone with a white hockey mask wearing what is believed to be a black bulletproof vest entering the mall through the Macy's store.
The person quickly ran through the upper level of Macy's and opened fire near the mall food court, firing multiple shots, one right after another with what is believed to be a black semi-automatic rifle, according to witness reports.
Witnesses described the shooter as being on a mission and determined, looking straight ahead.
Those interviewed said that Macy's shoppers and store employees were hiding huddled in the dressing room.
Evan Walters told ABC News Radio that he was locked in a store for his safety and he saw two people shot and heard multiple gunshots.
"It was over 20, and it was kind of surreal because we hear pops and loud noises," he said. "We're next to the food court here and we hear pops and loud noises all the time, but we don't -- nothing like that. It was very definite gunshots."
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