District 1 officers responded to the area of Morganford and River City around noon on August 2.
A bicyclist contacted police after observing a man lying face down, partially submerged, in the River Des Peres.
The St. Louis Fire Department responded and recovered the body of an unidentified man from the water.
The Medical Examiner’s Office responded. No obvious signs of trauma were observed to the man’s body at the scene.
The incident is being investigated as a suspicious death pending the findings of the Medical Examiner’s Office.