A 12-year-old girl has been indecently assaulted as she walked through an Oxford subway with her aunt.

Police are appealing for help in finding the attacker.

A police spokesman said the assault happened about 10.30pm on Friday (June 15) as the girl was walking through the subway linking Headington and Barton.

The girl was approached by a young man who exposed himself and indecently assaulted her.

The attacker is described as a male in his mid-20s with short, black hair.

Witness can call police on 01865 266333.