Police are appealing for witnesses to a fatal collision involving a car and a motorcyclist.
Officers were called to Longbridge Road in Dagenham, shortly after 22:15hrs on Friday, 14 May, and found a 21-year-old man seriously injured.
Despite the efforts of emergency services at the scene, and an off-duty officer in the vicinity giving CPR, the man died a short time later.
His next of kin have been informed.
The car and the driver stopped at the scene.
Detectives from the Roads and Transport Policing Command are investigating and would like to speak with anyone who has information regarding the collision.
Any witnesses, or anyone with any dashcam footage, is asked to call the witness appeal line on 020 8597 4874 or via 101 quoting reference CAD 8669/14MAY.