The families of three young men who were jailed after the murder of a teenager in Moss Side have submitted an application to refer their cases to the court of appeal.
Durrell Goodall and Reano Walters were both found guilty of the murder of 18-year-old Abdul Hafidah, who was stabbed to death in the south Manchester suburb in 2016.
Eleven men, including Goodall and Walters, were convicted of his murder or manslaughter after being charged by the Crown Prosecution Service with the killing itself - under joint enterprise law.