POLICE are trying to trace a mystery good samaritan who came to the aid of a pensioner during a street robbery.

The robbery took place in Lane Head Lane, Bacup on Thursday November 15 at 11.25 am. The victim was attacked by a youth who stole her purse, a bus pass and a St Christopher medal.

The youth ran towards the town centre. He is described as a white male, wearing a blue hat and a top with a horizontal blue stripe. Police would like to talk to the man who gave chase. Call DC Andy Riley on 01706237442 with information.