A student was dragged down an alley and raped while walking home from a night out in Manchester city centre.
The 19-year-old was walking on Ladybarn Lane, Fallowfield in the early hours of Saturday when a man approached and offered to walk her home.
Officers said despite the woman telling him to leave her alone, he dragged her down an alleyway between Whitby Road and Filey Road and attacked her.
The man was described as black or Asian, slim and about 5ft 9in tall.
He had short black hair, was clean shaven and was wearing baggy jeans and a long-sleeved top.
Greater Manchester Police called it a "harrowing and deeply distressing attack" and said patrols had been increased in the area.