A man has been arrested after car collided with a barrier in Plymouth leaving the passenger with life-changing injuries.
Police were called to Devonport Hill at 7.11am on Saturday morning where a BMW had crashed.
The 32 year-old driver was arrested nearby after he was initially seen to leave the vehicle. He remains in police custody.
A 24 year-old female passenger has been taken to Derriford hospital where she is being treated for serious head injuries.
Officers remained at the scene for four and half hours while the car was recovered and investigations took place.
Devon and Cornwall Police are appealing for witnesses.