The family of Joshua Green have appealed for information which may help police to trace his killers.
He was stabbed during a New Year celebration in Sheffield.
Joshua’s girlfriend Aisha McNellie appealed for information.
“We, Josh’s family, have come up against a brick wall and cannot move forward. We need your help to bring us closure to this heart-wrenching and horrific situation.
“We may have laid Josh to rest but we can’t rest as we are in torment.
“Joshua was a well-loved young man, who was beginning to make a positive contribution. He was applying for university and making a home for his family, who were his greatest joy and achievement. He has two beautiful children who are now fatherless through no fault of their own.
Det Supt Terry Mann on the steps outside the Sheffield club where Joshua Green was stabbed to death in the early hours of New Year's Day.He made a fresh appeal for information despite already speaking to many of the people in the club that night.
"While many people have provided us with statements others have chosen to stay silent or have refused to help."
Four people are answering bail in relation to the killing but no-one has been charged.
A fresh appeal is being made for witnesses to the fatal stabbing of 27 year old father of two Joshua Green. He died after attending a New Year's Eve party at the Stars and Mayfair Function Suites on Queens Road, Sheffield.
Joshua's mother Sarah Thompson, his girlfriend Aisha McNellie and his two year old daughter will join South Yorkshire Police in an appeal for witnesses to come forward. There were more than 400 revellers in the club that night.