A teenager has died after being stabbed near a Tube station in north London.
The Metropolitan Police were called at 15:50 GMT to Northwick Park, Harrow, following reports of an attack.
They found an injured youth, believed to be aged 17. He was given first aid but was later pronounced dead at the scene.
No arrests have been made. A crime scene is in place and inquiries into the circumstances are ongoing, a police spokesman said.