A passenger who suffered life-changing injuries after a serious incident on Cornwall's roads is a man in his 30s.

Police have released more information about what happened at Tremar near Liskeard.

Officers have confirmed a VW Golf was the only vehicles involved on Sunday evening.

The casualty is being treated for a serious head injury at Derriford.

However, Devon and Cornwall Police are still trying to work out the man came to be injured.

The force is asking anyone who saw something or who was in the area at around 6.45pm to come forward.

• Person suffers life-changing injury after 'collision' on Cornwall's roads

"At around 6.45pm on Sunday 15 September, police were notified of a single-vehicle incident at Tremar near liskeard.

"A passenger from a VW Golf travelling through this area has sustained serious life-changing injuries.

"It is unclear at this time how the passenger, a male aged in his 30s, came to receive these injuries. 

"He is currently at Derriford Hospital undergoing treatment for a serious head injury.

"Officers from the Alliance's Roads Policing Team based in Devon and Cornwall attended the scene.

"A full investigation of the scene took place and officers are working to establish the cause of this incident.

"Police thank the public for their patience while they investigated the scene".

Devon and Cornwall Police

Officers are appealing for any witnesses who were in the area at the time of the collision

Contact police by calling 101, or email 101@dc.police.uk, quoting log 785 of the 15/09/2019.