A man’s body was found in Dalbeattie’s Barr Burn on Monday morning.
The grim discovery was made at around 8am at the David Road Bridge.
The identity of the 55-year-old man has not yet been confirmed but he is believed to be from the town.
Police sealed off the area and plain clothes and CID officers were at the scene.
They were carrying out door-to-door enquiries and appealed for anyone with information to contact them.
A Police spokesman said: “Around 8am on Monday, the body of a 55-year-old man was found near to David Road, Dalbeattie.