A 14-year-old boy has been stabbed to death on a bus in Woolwich, in southeast London.
Police were called around 2.30pm to reports of a stabbing on a bus on Woolwich Church Road near the junction with the A205 South Circular Road.
A boy who police said had received stab wounds was treated by paramedics, but he died at the scene shortly after they arrived.
Officers have launched an investigation into the incident.
No arrests have been made so far but police are appealing for witnesses of the incident on the 472 bus.
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A cordon and road closures were in place as of shortly before 5pm.