Police today issued an appeal for witnesses after two road traffic incidents in West Oxfordshire, one of which involved the death of a teenager.

A 13-year-old boy was killed and a female motorist was left fighting for her life following the crashes last night. The teenager died after a collision with a grey Fiat Punto car outside McDonald's in Ducklington Lane, Witney, at 8pm.

A 17-year-old who was arrested on suspicion of careless driving has been released on bail until Wednesday, January 16, 2008.

Meanwhile, in Burford a woman was taken to Oxford's John Radcliffe Hospital with serious injuries following a head-on crash between a red Peugeot and a black Chrysler on the A40 about 55 minutes later.

Both vehicles ended up in a ditch.

The driver of the Chrysler was arrested on suspicion of dangerous driving.

PC Brian Sparrow, of Abingdon traffic police, said: "I would like to hear from anyone that saw either vehicle prior to the collision, or witnessed the collision itself."

Anyone with information on either incident is urged to call 0845 8 505 505 or Crimestoppers on 0800 555 111.