A man has been arrested on suspicion of attempted murder after a police officer was left with life-threatening injuries.

Thames Valley Police said the officer was injured following a suspected road traffic incident on the B416 Bells Hill, in Stoke Poges, Buckinghamshire, at 22:20 BST on Thursday.

The 38-year-old man from Slough was also arrested on suspicion of causing serious injury by dangerous driving and remains in custody.

Police said investigations were ongoing and they were appealing for witnesses.

Deputy Chief Constable Ben Snuggs said: "Anybody with any information about this incident should report it to the police immediately."

The road has been closed in both directions between Decies Way and Rogers Lane, the force added.