Police have launched a murder investigation after a 14-year-old boy died in Lee in south-east London.
Officers were called to Burnt Ash Road at around 9.45pm on Saturday 15th September to reports of a male stabbed there.
London Ambulance Service and the Helicopter Emergency Medical Service ambulance also attended the scene.
The boy was taken to hospital suffering stab injuries, where he later died.
While officers believe they know the identity of the deceased, formal identification awaits. Next of kin have been informed.
A post mortem is due to take place at Greenwich Mortuary on Monday 17th September at 12.30pm.
Initial reports suggest the victim was travelling on a route 202 bus through Lee Green, SE12.
The bus's destination was The Royal Standard in Charlton. As the victim alighted the bus in Burnt Ash Road he was attacked and stabbed. Officers are trying to establish if there was some sort of altercation on board the bus which led to the incident.
Detective Chief Inspector Mark Dunne from the Homicide and Serious Crime Command is leading the investigation. He said:
Three males, all believed to be aged in their mid to late teens, have been arrested on suspicion of murder. They remain in custody at a south London police station.