Police investigating the stabbing of a man in Oldham are renewing their appeal for witnesses on the first anniversary of the attack.
Police have released CCTV images of a group of men they want to speak to.
21 year old Thomas Hickey was assaulted outside the Liquid Envy nightclub on Waterloo Street.
As he tried to escape he fell breaking his knee.
He was then stabbed in the back and head.
Detectives say that it was a 'particularly nasty' attack and are asking anyone with information to come forward.