A man in his 40s suffered two fractured eye sockets and a broken nose following an assault in Whitefield.
At around 5 pm on Boxing Day, the male (pictured right) was in the communal garden of a property on Calder Crescent when he was attacked.
He has no recollection of the incident, police are looking to identify those responsible.
No arrests have been made.
Anyone with information about the incident or anything else that will assist with this investigation is asked to contact Bury CID on 0161 856 8213 or 0161 856 8121 quoting log 1439 of 30/12/2022.
Alternatively, contact Crimestoppers anonymously at 0800 555 111.