Police are appealing for witnesses to a collision in which a woman sadly died.

It happened just after 4pm on Saturday (February 6) on the A1086, Thorpe Road, in Horden, and involved a blue Ford Focus and a red Mercedes C220, which were travelling in opposite directions.

Sadly the driver of the Focus – a woman in her sixties – suffered fatal injuries as a result of the collision and was pronounced dead at the scene.

The driver of the Mercedes – a 43-year-old local man – has been arrested on suspicion of causing death by dangerous driving. He remains in police custody.

The road was closed for around eight hours while collision investigators worked at the scene.

Officers are keen to trace the driver of a black coloured Vauxhall type van which, although not involved in the collision, is believed to be a key witness.

Anyone who witnessed the collision, or has any information that could assist the investigation, is asked to call Durham Constabulary on 101, quoting incident number 241 of February 6.