A man was punched in the face during a robbery in Tameside.
It happened near the Methodist Church on Trafalgar Square in Ashton-under-Lyne at about 8.50pm on 20 September 2012.
The man, 25, was walking to a shop when he was approached by a group of four Asian men. One of the offenders demanded his mobile phone but when he refused to hand it over, he was punched in the face.
The other three men then searched his pockets and stole his Blackberry and a small amount of cash before running off.
They were described as being Asian and wearing dark clothing. Three were said to be of a medium build while one was of a stocky build. Some of the group were thought to be wearing white trainers.
The victim sustained some swelling to his cheek as a result of the attack.
Police Constable Donna Eastwood, from the Volume Crime Team at Ashton, said: "This man was set up for no reason whatsoever - he was attacked and robbed and subjected to a quite nasty ordeal just so these thieves could steal his mobile phone.
"This sort of attack could have happened to any one of us - it just so happened this man was the unfortunate victim - so we need to find the offenders because clearly they have no qualms about targeting innocent people.
"I would therefore ask anyone who has information about this robbery to come forward and help us find those responsible."
Anyone with information should call police on 0161 856 5813 or the independent charity Crimestoppers, anonymously, on 0800 555 111.