16-year-old Harry Pitman was stabbed and killed on New Year's Eve while watching fireworks with friends on Primrose Hill in London. A 16-year-old boy was arrested on suspicion of murder and released under investigation. The police believe Harry was with a group of friends on the viewing platform when the incident occurred. The victim's sister paid tribute to her mischievous and cheeky brother, stating he had no bad bone in his body. The police have urged witnesses to come forward with information about the incident.