PARKLAND, Wash. - Four police officers were shot and killed in a Sunday morning ambush at a Parkland-area coffee shop, officials said.

Pierce County Sheriff's Office spokesman Ed Troyer called the ambush "a targeted attack."

Officials at the scene said two gunmen burst into the Forza Coffee Co. outlet at 11401 Steele St. South, shot the four uniformed officers as they were working on their laptop computers, then fled the scene.

Other customers were inside the coffee shop at the time of the attack, but none of them were shot or injured.

A $10,000 reward is being offered for any information leading to the arrest of the suspects, Troyer said.

Emergency personnel rushed to the scene after receiving a report that multiple officers were shot and killed in the ambush at 8:30 a.m. Sunday, according to reports from the scene.

Within minutes, hundreds of investigators and police were rushing to the scene. Roads were blocked in the vicinity of the attack.

One witness who was driving past said he saw an officer on the ground just after the shootings.

Authorities later closed off the air space over the scene of the shootings.

This is a breaking news story. More information will be posted as it becomes available