Two men have been arrested following a hit-and-run in Buckinghamshire.
A 23-year-old man from St Albans was found lying injured in London Road near Aston Clinton, Aylesbury, shortly after 0545 GMT on Sunday.
Two men, aged 30 and 39, from Aylesbury, were arrested on Monday night on suspicion of failing to stop at a road traffic collision.
Both men, who were also arrested on suspicion of perverting the course of justice, were bailed until 13 December.
The victim has been taken to Stoke Mandeville Hospital with serious head injuries and is no longer believed to be in a life-threatening condition.