Manning was 49, according to the Snohomish County Medical Examiner's Office.
His death remains under investigation by the medical examiner's office and the Washington State Patrol.
He died about 4 a.m. June 26 after his Ford Explorer struck a power pole on Highway 530, east of Arlington.
Troopers said his vehicle failed to make a curve and went off the roadway, striking the power pole.
More Local News Headlines
Former sergeant admits he helped launder prostitution money Brief visit by Obama expected to snarl Seattle traffic Possible norovirus outbreak at Colby living facility Shirley Gilbertson loved her temp job so much, she stayed on for free Conferees shape leaner budget for military pay, benefits Front Porch: Jackson volleyball hosts fundraiser Applause In Uniform
Our new comment system is not supported in IE 7. Please upgrade your browser here.