A 14-year-old girl has been assaulted close to the cattle market in Thame.
The incident happened in the alleyway between the market and Barley Hill School and police are now appealing for witnesses.
The assault took place at around 9pm on February 28 when the girl was walking along the alleyway.
As she approached the path she saw a man waiting at the entrance and noticed that he began to follow her after she had walked past him.
The girl was aware that he was getting closer to her, so decided to run to the end of the alleyway, where she started walking again and took a phone call from her mother.
However, after ending the phone call she turned around and realised the man who had been following her in the alley was behind her again.
The man grabbed her arm and refused to let go of the girl when she shouted at him. The girl eventually managed to break free and ran off along Charles Street and in Ludlow Drive where she was met by her mother and taken home.
The man is described as having dark skin, but not black, in his mid-twenties, 5ft 8ins, and medium build. He was wearing a black hooded top with the hood up, dark-coloured jeans, black gloves and black Nike trainers.
PC Sarah Phillips said: “I would like to speak to anyone who was in the area of the incident who saw or heard anything, or anyone who may have seen this man around the town.
Anyone with information is urged to contact 0845 8 505 505 or alternatively call Crimestoppers nonymously on 0800 555 111.