Seven people including a teenage driver and a seven-week-old baby were injured during a head-on collision in County Durham.
Officers are now appealing for witnesses who saw the two cars collide on the A689 near Bishop Auckland.
The crash happened at around 1.40pm on Friday on the A689 Addison Road between the Toronto Lodge and High Grange.
It involved a black Renault Clio which was travelling towards High Grange when it crossed the carriageway and collided with a blue Vauxhall Mokka travelling towards Toronto.
The driver of the Clio, a 17-year-old girl, was taken to James Cook University Hospital, in Middlesbrough, with serious injuries.
Three teenage boys who were also in the car were taken to the University Hospital of North Durham (UHND) with varying injuries. However, none of them were believed to be seriously injured.
The driver of the Mokka, a 34-year-old woman, and her two passengers, a 66-year-old woman and a seven-week-old baby boy, were taken to UHND with minor injuries.
The road was closed for several hours as the casualties were treated, and as accident investigators worked at the scene.
Officers would like to speak to anyone who witnessed the collision, or anyone who may have any dashcam footage of the incident or footage of the cars shortly before the collision.
Anyone with information is asked to call the Durham Constabulary ’s Collision Unit on 0191 375 2159, or call 101, quoting incident number 227 of December 20.
