Throughout the evening Chowdhury raped the victim a total of 11 times, using different beds within the house and forcing her to clean herself between attacks.
He also invited two other men to rape her, bringing the total number of men who had abused her that evening to four.
Chowdhury then took the girl home, asking if he could take her phone number before he left.
The girl reported the rape to the police and identified Chowdhury's address as the place the offences had taken place. Officers later executed a warrant at the address on Attock Close and arrested him.
Detective Chief Inspector Mary Doyle from Oldham CID said: "This child was subjected to a terrifying and prolonged attack from Chowdhury and his associates.
"One of the first things she told him was her name and age, so there is no doubt that he was aware how young she was.
"Chowdhury's actions that evening would have been unacceptable on a woman of any age, but to carry out this sort of attack on a 12 year old child is simply abhorrent.
"His victim has shown a great deal of bravery throughout this case, informing the police and pursuing this case to prosecution.
"I hope her bravery and the resulting conviction will encourage other victims to come forward, safe in the knowledge that GMP will investigate any complaints fully and take robust action against the people responsible."
Greater Manchester Police works in partnership with Oldham Council and Oldham Primary Care Trust to combat the issue of child exploitation in the borough.
A team, known as Messenger, has been set up to work in partnership with children's charity Barnardo's to identify children who are potentially at risk from abuse and formulate a strategy aimed at helping these individuals.
Anyone with any concerns about children being exploited in their area should contact their local police station on 0161 872 5050 or Crimestoppers anonymously on 0800 555 111.
Please visit the Greater Manchester Police website to read the complete article.