An 18-year-old woman from Portsmouth was walking in Cosham when she was indecently assaulted.
The incident happened on Saturday 17th August at around 6.30pm along Southampton Road.
The victim was walking near Allaway Avenue junction when a man approached her.
He indecently assaulted her before she pushed him away and the man ran towards the centre of Cosham.
The woman was not injured.
The suspect is described as white, aged in his 40s or 50s and of medium build with a beer belly.
He was around 5ft7ins tall with short black and grey hair under a baseball cap.
Witnesses or anyone with information is asked to contact Fratton Police Station on 101.