Homeowners in the Seven Mile area discovered a decomposing body by a dock near their home, police said.
The homeowners called Spokane County Sheriff's deputies to the area on North Rivermere Avenue late Monday night.
Witnesses said they found the body in the Spokane River, lodged against a dock. They said they thought it was a log at first.
According to deputies, the body may have been in the water between four and five months. Dive teams transported the remains to the medical examiner.