A police officer has been seriously injured after being struck by an off-road motorbike.

A teenager has been arrested and charged after the incident in Livingston, West Lothian, on Wednesday.

The 51-year-old officer was investigating a complaint of antisocial behaviour when he was struck, suffering leg injuries which will require surgery.

Chief Inspector Alun Williams, local area commander for West Lothian, said: "We have charged an 18-year-old man in connection with a number of road traffic offences.

"A police officer was seriously injured following a collision with an off-road motorbike on a footpath near the Ryebank area of Livingston at around 1.40pm on Wednesday.

"I can confirm that a 51-year-old male officer was taken to the Forth Valley Hospital with serious leg injuries.

"The 18-year-old is expected to appear in court at a later date."