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.
More top news
Police are appealing for help to find a driver after a woman and child were knocked down in Leeds.
An 18-year-old has appeared in court accused of killing teenager Leonne Weeks from Rotherham.
Darren Moorhouse died after being stabbed at Athol Close, off Athol Road in Ovenden on Wednesday afternoon.