St. Paul police said today that a body found in the Mississippi River in August was Joey Kaiser, a 17-year-old who disappeared in May.

No foul play was suspected in the teen’s death, said Peter Panos, a St. Paul police spokesman. It wasn’t known when Kaiser died, he said.

Police used DNA to make the identification because of the level of decomposition. The body was pulled from the river, near the Ford Motor Co. plant, on Aug. 19.

Kaiser’s family has declined to speak on the matter, saying they want to grieve and move on.

Kaiser, a Cretin-Derham Hall High School junior, left his St. Paul home May 20 on a bike with one pedal. His mother told the Pioneer Press that the teen had recently suffered from anxiety and depression.

Hundreds of family members and friends posted fliers across the city, and searches were conducted.

Three days after Kaiser disappeared, police found his bike at the base of a path leading to the Mississippi River bluffs, a few blocks from his home.