A woman was left with 'significant' injuries after being hit over the head with a wine bottle in a 'brutal' attack.
The victim, who is in her 20s, was set upon by a group of four women - one of whom brandished the bottle - near to the Shell petrol station on Regent Road, in Salford.
She was left with injuries which required hospital treatment.
The attack happened at about 4am on Saturday, August 1 of last year.
Detectives have now released images of four women they wish to speak to in connection with the assault.
They are encouraging anyone with information to come forward.
Detective Constable Craig Shannon, of GMP's Swinton CID, said: "This was a brutal assault on an innocent woman in the early hours of the morning and we are keen to bring those responsible to justice.
"This incident occurred some months ago but we have been exhausting all available lines of enquiry ever since to establish the full circumstances of this incident and who was involved.
"We wish to speak to the four women pictured as part of our enquiries and I urge anyone with information about our identity to get in touch with us as we believe it will significantly aid our investigation."
Anyone with any information about the assault should contact police on 0161 856 3777 quoting incident number 831 of 01/08/20.
Information can be passed on anonymously by calling the independent charity Crimestoppers on 0800 555 111.
