A 14-year-old boy has been stabbed to death on a bus in south-east London, the Metropolitan Police said.
The teenager was treated at the scene in Woolwich but died soon after medics arrived, the force said.
The youngster was on a route 472 bus on Woolwich Church Road near the junction with the A205 South Circular Road, close to the Woolwich Ferry.
Police were called at 2.28pm on Tuesday.
(PA Graphics)
No arrests have been made, the Met said.
A woman working at a nearby church told the PA news agency she saw an air ambulance and other emergency service vehicles arrive at the scene, but did not see any of the passengers from the bus.
Police cordons and road closures remain in place while emergency services carry out inquiries.
Some 10 teenagers were killed in London last year, nine of whom were the victims of stabbing while one died in a shooting, according to data compiled by the PA news agency.
This was down sharply from 21 teenage deaths in the capital in 2023.
The youngest victim in 2024 was aged 14.