A 13-year-old girl was sexually assaulted while walking a dog in Havant.
The teenager was walking in Park House Farm Way, with a another girl between 3.00pm and 3.30pm on Sunday 2 October, when they were approached by a man who was also walking a dog.
He sexually assaulted the older girl before walking off, police said.
Police have now released an e-fit of a man they want to speak to.
The suspect is in his 30s, white, with short brown hair and tattoos on both arms. He was wearing a short sleeved white T-shirt and grey three quarter length tracksuit bottoms.
He was walking what was described as a Staffordshire bull terrier-type dog.
Anybody who recognises the man or who may have been the area at the time of the attack is asked to call police on 101. Alternatively you can call the Crimestoppers charity anonymously on 0800 555 111 or give info via http://www.crimestoppers-uk.org