The Metropolitan Police are offering a £20,000 reward as detectives try to urgently trace a 22-year-old man wanted in connection with the death of film student Finbar Sullivan. The appeal is part of a widening investigation into the fatal attack in Primrose Hill, north London.

Sullivan, 21, was killed after violence broke out at about 6.40pm on April 7. Police say he was attacked during a confrontation involving seven men and suffered a combination of kicking, punching and stab wounds.

The new reward highlights how important the wanted man is to the case. Detectives are continuing to work through evidence and have made a direct appeal for information that could help establish his whereabouts and clarify exactly what happened during the brawl.

The case has drawn significant attention because of the location and the age of the victim. Investigators are still focused on identifying everyone involved and building a full picture of the events that led to Sullivan's death on Primrose Hill.