Detectives are investigating the rape of a woman in Clayton.
The woman, 38, approached the offender, who was standing at a bus stop near to a supermarket on Ashton New Road, and asked him for a cigarette.
He offered to roll her one and she walked with him to Stokes Street.
Once there he threatened her at knife point and raped her.
The incident happened sometime between 12.01am and 10.30am on 21 November 2012.
The victim has given an account of the offence but has not been able to identify the time it happened.
The offender is described as Somalian, between 28 and 30 years old, about 6ft tall and of muscular build. He had a bald head with a lump on his forehead and was wearing a dark coloured hooded jumper and blue jeans. Prior to the incident he gave his name as ‘Tanasula’.
Detective Inspector Jamie Daniels, from the Serious Sexual Offences Unit, said: “The victim is clearly extremely upset by what has happened and we are doing everything we can to support her.
“She was drunk at the time and coupled with the trauma of the incident has not been able to identify a time that this happened.
“She has however provided a detailed account of the offence and offender and if anyone recognises someone from the description I would urge them to get in touch.
“This is an extremely serious offence in which a vulnerable woman has been raped at knifepoint and we are doing all we can to identify the offender.”
Anyone with information is asked to call police on 0161 856 2124, or Crimestoppers, anonymously, on 0800 555 111.