Detectives from the Roads and Transport Policing Command are appealing for information and witnesses following a collision between a car and three female pedestrians in Islington.
Police were called at around 04:05hrs on Saturday, 29 August to reports of a car in collision with three pedestrians on York Way, near the junction with Randells Road, N1.
Officers and the London Ambulance Service attended. The pedestrians, who are all women aged 20, were taken to a central London hospital.
The first woman remains in hospital in a critical condition; the second woman is in a serious condition; and the third woman is receiving treatment in hospital for a leg injury.
The car did not stop at the scene, but was later found abandoned after having collided with a tree.
A 33-year-old woman has since voluntarily attended a north London police station and has been arrested in connection with this incident.
Local road closures have now been lifted.
Any witnesses or anyone with any information is urged to call the Serious Collision Investigation Unit at Alperton traffic garage on 020 8991 9555, or Crimestoppers anonymously on 0800 555 111 or via www.crimestoppers-uk.org.