A 15-year-old boy arrested after a man was stabbed to death after a party has been given bail.
Daniel Graham was attacked near East Dulwich station after trouble flared at an 18th birthday party at the Dulwich Hamlet FC clubhouse on 29 January.
Police said Mr Graham, 18, was chased on to the number 176 bus in Dog Kennel Hill by up to six youths. As he got off the bus to escape he was stabbed.
Mr Graham suffered 24 separate knife wounds, tests showed.
Another boy, aged 13, was given bail on 31 January.
He had been arrested on suspicion of attempted murder after a 14-year-old boy was shot in the leg on the same night as the stabbing of Mr Graham.
Police believe the incidents are linked.