Hampshire Police has confirmed the body of a man was discoveredin the River Itchen at Woodmill in Southampton on Sunday, still handcuffed from an earlier incident.
They've confirmed the body is a 22-year-old man who ran away from police while being detained on the 12th January.
The force say initial enquiries suggest the body has been in the water for a long time but the death is not being treated as suspicious.
Hampshire Police say an internal review is ongoing.
A file is being prepared for the coroner.