Police have released the image of a man they want to speak to after a man died from serious head injuries.
At 12.45pm on Monday 19 November, police were called to an address on Wheler Street, Openshaw.
Officers attended and found 47-year-old Norman Sheldon unconscious.
He was taken to hospital for treatment to serious head injuries and but sadly died on Saturday 24 November 2012.
Police are treating this as a murder investigation.
Two men, aged 25 and 26 were arrested on suspicion of assault and have been bailed until 5 March 2013 pending further enquiries.
A 35-year-old man and 28-year-old woman were arrested on suspicion of murder and have been bailed until 5 March 2013 pending further enquiries.
Detective Chief Inspector Steve Keeley from the Major Incident Team said: “Norman’s family are understandably still grieving at the loss of their loved one and want answers as to what happened and what led to his death.
“The image we have released is very clear and I would ask anyone who recognises this man to contact us as soon as possible as we are keen to speak to him. I would also directly appeal to the man himself to come forward as he may hold vital information as to what happened.
“I would ask people to cast their minds back to 19 November 2012. If you were in or around the Wheler Street area at the time of the incident or saw anything suspicious, I would ask you to get in touch. The details you supply will be treated with the strictest of confidence.”
Anyone with information is asked to call police on 0161 856 5722 or contact the independent charity Crimestoppers, anonymously, on 0800 555 111.