Images have been released of men police want to trace over a jewellery scam.
Officers want to speak to them after a man had a chain stolen after being approached by strangers offering to sell him jewellery.
The victim said three men offered to sell him a chain and some rings outside The Portland Hotel, Chesterfield, on Saturday, February 4, at about 4pm. and put the chain around his neck.
When the 48-year-old refused to buy the items he thought the men removed their chain - but later found they had taken his and left a fake in its place.
The conmen were all aged between 20 and 30, of Eastern European appearance and dressed in black.
n Officers are also looking for a thief who approached a 70-year-old woman outside the same venue and grabbed the necklaces she was wearing.
She was approached by the thief on Friday, at about 10.25pm. He put his arm around her, before grabbing her jewellery and fleeing.
The thief was in his late twenties, about 5ft 9in, of medium build and Mediterranean appearance with dark hair and stubble. He was wearing a pink top and blue trousers.
Anyone with information is asked to call police on 101.