A U.S. Customs and Border Patrol agent discovered the first body floating in the river between 6:30 and 7:30 a.m. and found the second body soon after, the Detroit Free Press reported.
The Customs and Border Patrol agent who discovered the bodies reported it to the Detroit Police Department, who then reported it to the U.S. Coast Guard, The Detroit News reported.
"The [Coast Guard] boat crew came across the second one as they were responding to the first," U.S. Coast Guard Lt. Justin Westmiller said. "Both bodies were found without hands, feet or heads. The were clearly cut off."
The bodies are to be examined by the Wayne County (Mich.) Medical Examiner's Office to determine the cause of death. The Detroit Police Homicide Unit is handling the investigation.