DYFED-Powys Police is appealing for information about a serious injury collision.
The collision involved a silver Ford Fiesta and a Silver BMW 120 and occurred yesterday (Sunday, January 13) at approximately 4pm on the A40 between Pont-y-fenny and Whitland roundabout.
The Silver Fiesta was travelling towards Whitland and the BMW was travelling towards Carmarthen.
A 67-year-old woman has been taken to hospital with life threatening injuries.
A 71-year-old man and a 68-year-old woman were also taken to hospital suffering serious injuries.
Anyone who witnessed the collision, or was driving along the road around the time or with dash cam footage, is asked to contact the Serious Collision Investigation Unit by calling 101.
If you are deaf, hard of hearing or speech impaired, please text 07811311908. Please quote reference DP-20190113-199.