A man who was shot and critically injured inside a Seattle parks department building on Friday has been upgraded to serious condition. The suspect in the shooting is due in court today.

After an extensive police search, officers arrested Carolyn Piksa, 46, a Seattle Parks and Recreation employee wanted in connection with the shooting of co-worker Bill Keller, 65, on Friday afternoon.

Piksa is expected in court this afternoon.

Piksa was taken into custody just before 5 p.m. Friday at her Burien home.

Seattle police had launched a search for Piksa in the Bitter Lake area in North Seattle after receiving a 911 call at 1:52 p.m. at the Seattle Parks and Recreation headquarters near N 82nd and Densmore Avenue N., just north of Green Lake.

Responding officers found a man with gunshot wound to the chest.

Keller is the executive director of the Associated Recreation Council, a non-profit that works closely with the parks department.Medics immediately transported Keller to Harborview Medical Center.

Seattle police say they were investigating the possibility that the incident was a case of workplace violence. A motive hasn't been determined.

Witnesses at the parks headquarters reported seeing Piksa walk into the building.

They're having a casual conversation, and then somehow a gun came out, said a witness. And then she got scared and I guess the lady just walked out the community center.

Withing minutes of receiving the call, SWAT team members surrounded the building and pulled out about 30 employees and people inside one by one, but by then the suspect had fled the scene.

Metz said the police IntelUnit worked with the phone company to trace Piksa's cell phone and tracked her to a location in Burien. The Intel Unit and SWAT team triangulated her phone to her house in Burien. After setting up a containment around her house, SWAT members communicated with her using a P.A. system. She immediately came outside, unarmed, and surrendered to police without incident.

Seattle Mayor Mike McGinn says all parks facilities and events will be on a normal schedule Saturday.

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