A teenager was kicked to the floor and had his phone stolen during a robbery in Aylesbury on Wednesday.
The 19-year-old victim was walking along Penn Road at about 11.45pm, past the junction with Eaton Road, when he noticed a man walking behind him on the opposite side of the road.
The teen then realised the person had crossed to his side of the road and picked up his pace and as he passed the shops the robber shouted at him to give him his phone.
As he continued to walk, the man grabbed his bag and said he wanted his phone before kicking the victim in the leg, causing him to fall down.
The robber then stole his phone and ran up Hampden Road.
The offender is white, in his early 20s, around 5ft 11ins, of slim build, with short spiky brown hair. He was wearing a grey fleece hooded jacket.
Anyone with information should call police on 101 or Crimestoppers anonymously on 0800 555 111.