Murder detectives probing the shooting of a man in a Suffolk club are making a renewed appeal for information as the anniversary of his death approaches.
Jimoh Plunkett, 24, from south London, was shot inside Zest
Jimoh Plunkett, 24, from south London, was shot inside Zest, in Ipswich, on 9 December 2006.
Fifteen people are on bail after being arrested on suspicion of murder or conspiracy to murder.
The inquiry has seen police conduct more than 4,600 tasks, take 1,300 statements and log 8,000 exhibits.
Det Supt David Cole, of Suffolk Police, said: "We know there are still witnesses and individuals who hold key pieces of the jigsaw. Maybe a year on they may feel they are able to come forward to help us.
"We need those holding information about that night to have the courage to stand up to those who think they can get away with murder."
The murder investigation has seen detectives from Suffolk Police travel to South Wales, Southampton, Kent and Essex.
Zest was closed following the shooting in December last year
A permanent team was set up in south London at an Operation Trident police station - which deals specifically with gun crime in the capital - earlier this year.
Det Supt Cole continued: "We need those holding information about that night to have the courage to stand up to those who think they can get away with murder.
"We are determined to do all we can to bring Jimoh's killer to account for his actions, however we do need the support of the community in South London to do this," he added.
The Zest nightclub in Ipswich remains closed.
Anyone who was in the club on night of the shooting, or has information about Mr Plunkett's killer, is asked to contact Suffolk Police or call Crimestoppers.