Images have been released of two men police want to speak with after a couple and their son were attacked in a car park at the Trafford Centre on Christmas Eve.
Police believe there are 'links' between the men pictured and the Middleton and north Manchester areas of Greater Manchester.
Greater Manchester Police said officers were called at 5pm on December 24 last year to reports of a father, mother and son being attacked by three other men.
It happened in a car park of the shopping mall.
The father - a 39-year-old man - suffered an injury to his eye socket.
Almost two months on, he's still having treatment, the force said.
No other details - or an exact location - have been released.
Police said officers investigating the assault want to speak with the two men pictured.
The force has issued an appeal for the public's help.
A man, aged 23, has been interviewed voluntarily and 'remains under investigation', the force said.
In a statement on Tuesday, GMP said: "At around 5pm on Thursday 24 December 2020, officers were called to a report of three people - a father, mother and son - being attacked by three other men in a car park at the Trafford Centre.
"The father - a 39-year-old man - received injuries to his eye socket for which he is still receiving ongoing treatment.
"A 23 year-old man has been voluntarily interviewed and remains under investigation.
"Today - Tuesday - investigators are appealing for information about the identity of two men who they have released images of as part of their enquiries.
"Police believe there are links between the men pictured and the Middleton and North Manchester areas."
Anyone with information is asked to contact 0161 856 5050 quoting incident 1879 of 24/12/2020.
Details can also be passed to Crimestoppers on 0800 555 111.
