The 40-year-old officer fatally shot himself Tuesday, according to Pierce County medical examiners.
The officer had worked for Lakewood since 2008 and had worked as a police officer in Seattle.
The officer struggled with mental illness, the department stated in a Facebook post.
“He was a caring man who was known for his generosity and kind heart,” the post stated. “Our thoughts and prayers are with his family, and we will pull together to make sure they get whatever support they need.”