Police have released CCTV images of a man they want to speak to in connection with a knife-point robbery at a Peterborough shop.
A man went into the store on Lincoln Road in Millfield and bought a drink.
He returned later holding a knife and demanded money from a member of staff but he ran off when the woman called the police.
The inciden thappened around 10.30am on Tuesday, May 31.
Anyone with information is asked to contact police on 101 or Crimestoppers, anonymously, on 0800 555 111.