A man who wrestled with an armed thief fleeing the scene of a failed jewellery robbery has been located by police.
Two men, one armed with a handgun, burst into Harvey Daly jewellers in Long Causeway in Peterborough on Friday morning.
A passer-by tried to stop one of the thieves from getting away.
Police said that after an appeal to the public officers had located the man and would be speaking to him later.
Police are still trying to trace the men responsible.
One of the men was described as white, 6ft (1.8m), in his 20s, with a shaved head.
He was wearing blue jeans and a dark jacket with a grey stripe across the chest.
The second was described as white, aged 20 to 25, wearing a dark blue jacket, blue jeans with the bottoms turned up and black shoes. He had short, dark hair.
Anyone with any information is asked to contact police.