Here's the most recent suspect description: black man, mid-20s to mid-30s, 5 feet 7 to 5 feet 10, medium build, scruffy and wearing a black jacket over a gray hooded sweatshirt and blue jeans.
Police investigators have identified three of the four officers. All are from the local area. The fourth officer they are still trying to identify.
Law enforcements from all over the region have responded to the scene. King County Guardian One helicopter is in the area.
The Sheriff's Department is in the process of notifying next of kin and coworkers.
"We are having a lot of colleagues wake up to this news," Pierce County sheriff's spokesman Ed Troyer said.
The four officers were going over pre-shift paperwork when a man entered the coffee shop and opened fire with a handgun. The baristas and two customers inside were not injured.
The suspect fled on foot after the shooting.
There are possibly looking for another person and are searching multiple places, including residences and parking lot, Troyer said at a briefing.
There is no information on the motive for the deadly killing. There was no preexisting threat against the officers.
As of right now, there is no link to the Oct. 31 slaying of a Seattle police officer.
The Sheriff's Department is setting up a special tips line but for now, anyone with information is encouraged to call Crime Stoppers at 253-591-5959. There is a $120,000 reward.
Pierce County Prosecutor Mark Lindquist said he's following the developments in the slaying of the four officers.
"Our hearts go out to the families," he said. "One of our main concerns right now is we still have some crazy coldblooded killer or killers on the loose."