A 17-year-old man was injured during a robbery in Newmarket in the early hours of Saturday morning.
The victim was walking along the Yellow Brick Road path near the Ian Trethowan House flats at around 1am when he was assaulted and had personal items, including a mobile phone, stolen from him. He suffered minor injuries.
Police said three males, wearing hooded tops with the hoods up and bandanas across their faces, carried out the attack before running off towards Exeter Road.
Officers want to speak to anyone who was in the area at the time of this incident, or may have seen the offenders beforehand or afterwards.
Call DC Ian Webb at Bury St Edmunds CID on 101 or Crimestoppers anonymously on 0800 555 111.