Carolyn Piksa, 47, allegedly shot Bill Keller, 70, with a handgun shortly before 2 p.m. at the Parks and Recreation's Green Lake office and fled in a pickup truck before police arrived,KIRO-TV, Seattle, reported. She allegedly went to another facility and brandished a gun at a woman before leaving, the TV station said.
Piksa was arrested at 4:50 p.m. in Burien, about 17.5 miles away from the shooting scene.
An official at Harborview Medical Center told KIRO-TV Keller, executive director of the Associated Recreation Council, was hospitalized in critical-but-stable condition with a gunshot wound to the chest.
The Seattle mayor's office closed all community centers, pools and parks facilities for the day after the shooting.
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