A young woman is in a critical condition in hospital after a car hit three friends in central London.They were hit in York Way, Islington, but the driver failed to stop at the scene.
The car was later found abandoned having crashed into a tree, police said.
The victims, aged 20, were taken to hospital and one of them is in a critical condition.
A second victim was seriously injured but remains in a stable condition. The third suffered a broken leg.
A 33-year-old woman has voluntarily attended a north London police station and has been arrested.
Detectives are appealing for witnesses to the crash, which happened at 4.05am on Saturday, to call the Serious Collision Investigation Unit on 020 8991 9555 or Crimestoppers anonymously on 0800 555 111.