Police in Alfreton are appealing for a Good Samaritan to come forward and get the praise he deserves.
The mystery man prevented a thief stealing a motorcycle from a house on Independent Hill in the town at 3.30am on Tuesday, July 26.
Sgt Andy Bott said: “It appears that this man saw two people, who were wearing balaclavas, wheeling away a motor bike from a driveway. The suspects ran off and he alerted the owner.
“The bike was recovered undamaged but the owner didn’t get the name of the man who helped him.
“I’d really like this man to contact me so that he can be properly thanked. He can ring me on 0345 123 33 33.”