 Ben Hitchcock was stabbed |
Police have put up a �10,000 reward for information leading to the arrest and conviction of the killers of a 16-year-old boy. Ben Hitchcock was stabbed in the stomach in Beckenham, south-east London, when a fight broke out over gate crashers at a party on 23 June.
Officers have appealed for witnesses on websites such as Gone Too Soon and have visited a youth club used by Ben.
Eighteen youths arrested over the death are on bail until 8 August.
Det Ch Insp Dave Garwood said: "We are certain that someone knows who used the knife that killed Ben.
"We need to hear from them, for the sake of Ben's family and many friends."
Post-mortem results showed Ben died from a stab wound to the abdomen.