A 14-year-old boy has been stabbed to death on a double-decker bus, police have said.
The victim was killed on the 472 bus on Woolwich Church Road in Woolwich, south-east London, at about 14:30 GMT.
The boy died at the scene shortly after paramedics from London Ambulance Service and the air ambulance arrived, the Metropolitan Police added.
No arrests have been made but a police cordon and road closures remain in place.
