A teenager remains fighting for her life after suffering serious head injuries in a supermarket car park in Sunderland.

The injuries were caused following an incident in Morrisons car park in Seaburn at about 7.30pm on Tuesday when, for reasons yet to be established, the girl was thrown from the bonnet of a light-coloured Fiat 500 car.

Police were alerted at around 9.45pm by staff at the Royal Victoria Infirmary (RVI) who told them that a woman had been admitted with serious head injuries.

The 16-year-old girl's condition was described on Thursday morning as "critical but stable" after she spent her second night in hospital.

Her family are being supported by specially-trained family liaison officers.

An investigation has been launched into the incident and how the girl suffered the injuries.

A woman and girl, aged 18 and 16, were arrested on suspicion of causing serious injury by dangerous driving and have since been released under investigation.

It is believed that all parties involved were known to each other.

Sergeant Dave Roberts, of Northumbria Police’s Operations Department, is leading the investigation and has appealed for witnesses to come forward.

He said: “This is clearly an awful incident and has left a 16-year-old girl with serious head injuries.

"We will continue to offer support to her family.

“We are committed to finding out the circumstances behind this and the events that immediately preceded the girl sustaining these injuries.

“This happened in a busy supermarket car park so we believe people will have been nearby and potentially witnessed what happened. I’m asking those people to do the right thing and pick up the phone today – please pass on any information you have.

“We have already spoken to two females in connection with this incident and will continue to carry out a range of enquiries throughout the day.

"Anyone with dashcam footage or who was in the area at the time are asked to get in touch as soon as possible.”

Anyone with information is asked to contact police via the ‘Tell Us Something’ page of their website or by calling 101 quoting log 1089 241120.