Date: 1 Jan 2012
Joshua Green was stabbed in the early hours of 1 January 2012 after an argument in a club.
He had been in the Stars and Mayfair Function Suites on Queens Road in Sheffield when he was stabbed in the neck on the dance floor at about 2.45am.
The murder weapon was never found.
Four men were arrested shortly after his murder, but no charges were made.
The police said that they thought that he had been stabbed after a confrontation.
The police said that there had been about 400 people at the event but said that a number of them had chosen to remain silent over the murder.