PORTLAND, Ore. (AP) — A gunman opened fire in a suburban Portland shopping mall Tuesday, killing two people and wounding another as people were doing their Christmas shopping, authorities said.

Witnesses described a scene of chaos and disbelief as a gunman wearing some sort of camouflage outfit and a white mask shot an initial burst of fire and then more rounds at Clackamas Town Center. Shoppers tried to find safe areas as teams of police officers began entering the mall to find the shooter.

Clackamas County sheriff's Lt. James Rhodes said later that the gunman was dead, but he wouldn't say how he died or provide any details about him.

Authorities were going store-to-store to secure the scene and to escort hiding shoppers outside, but Rhodes said there was no indication that there was more than one shooter.

Austin Patty, 20, who works at Macy's, said he saw a man in a white mask carrying a rifle and wearing a bulletproof vest.

He heard the gunman say "I am the shooter," as if announcing himself, Patty said. He then fired several shots paced seconds apart.

A series of rapid-fire shots in short succession followed. Patty said he ducked to the ground, then ran.

His Macy's co-worker, Pam Moore, told The Associated Press the gunman was short, with dark hair, dressed in camouflage. He had body armor and a rifle.

"I heard about 20 shots and everyone hit the ground," Moore said. "That's when we all just ran."

Shaun Wik, 20, from Fairview, said he was Christmas shopping with his girlfriend and opened a fortune cookie at the food court. Inside was written "live for today, remember yesterday, think of tomorrow."

As he read it, he heard three shots. He heard a man he believes was the gunman shout, "Get down!" but Wik and his girlfriend ran. He heard seven or eight more shots. He didn't turn around.

"If I had looked back, I might not be standing here," Wik said. "I might have been one of the ones who got hit."

Kira Rowland told KGW-TV that she was shopping at Macy's with her infant son when the shots started.

"All of a sudden you hear two shots, which sounded like balloons popping," Rowland told the station. "Everybody got on the ground. I grabbed the baby from the stroller and got on the ground."

Rowland said she heard people screaming and crying.

"I put the baby back in the stroller and ran like hell," Rowland said. "It was awful. It was shots after shots after shots like a massacre.

"It was just awful."

Holli Bautista, 28, said she was shopping in the Macy's for a Christmas dress for her daughter when she heard a two or three pops that sounded like firecrackers.

"I heard people running and screaming and saying 'Get out, there's somebody shooting,'" she told the AP. "It was a scene of chaos."

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