Police are appealing for witnesses and information after a driver failed to stop at the scene of a serious collision.
At 04:00hrs on Sunday, 6 December, a car was in collision with a pedestrian on the eastbound A13 near to Goresbrook Leisure Centre in Barking.
The pedestrian - a 21-year-old man - was taken to hospital where he remains in a critical condition.
The driver failed to stop at the scene. The vehicle, a dark coloured Mercedes, was found shortly after the incident. Enquiries are continuing re trace the driver.
Detectives from the Serious Collision Investigation Unit at Chadwell Heath are investigating.
Officers are appealing for the driver of the Mercedes or anyone who witnessed the collision to call them on 020 8597 4874. To provide information anonymously, call Crimestoppers on 0800 555 111.