Detectives investigating the fatal stabbing of a 15-year-old in Newham have arrested two 16-year-old boys [C] and [D] and a 14-year-old boy [E] on suspicion of conspiracy to murder.
They have all been taken into custody at a south London police station.
Police were called by London Ambulance Service to Byford Close, E15 at 18:45hrs on Tuesday, 3 September following a report of a fight in progress.
Officers attended and found Michael Irving, who was aged 15 and from Woolwich, suffering from stab injuries.
Despite the efforts of medics, Michael was pronounced dead at the scene at 19:48hrs.
A 16-year-old boy [A] and a 15-year-old boy [B] have both been charged with murder.