Detectives are appealing for witnesses and dashcam footage after a motorcyclist died in a collision on the A406 in north London.
Police were called at 11:43hrs on Sunday, 30 May to reports of a collision involving two motorcycles on the A406 Drury Way in Wembley.
Officers attended along with the London Ambulance Service and London's Air Ambulance. Despite their best efforts, a 25-year-old man was pronounced dead at the scene. His next of kin has been informed and are being supported by specially trained officers.
The second motorcyclist was taken to hospital where he remains in a life-threatening condition. His next of kin has also been informed.
Detectives from the Serious Collision Investigation Unit are investigating and would like to hear from anybody who witnessed the collision, or anyone who has dash cam footage.
If you can help please call 101 or tweet @MetCC quoting reference CAD 3374/30May. To remain anonymous Crimestoppers on 0800 555 111.