Dyfed-Powys Police were called to a road traffic collision on Friday (Jul 28) on the B4309 between Furnace and Maen Gwynne in Llanelli.”
A spokesperson for Dyfed-Powys Police said: “Four vehicles were involved in the collision. Three people have been taken to hospital, an adult and two children, with what are described as serious injuries.”
The road was closed and diversions were put in place.
A Welsh Ambulance Service spokesperson said: “We were called on Friday 28 July, at approximately 9.42am, to reports of a road traffic collision on the B4309 between Furnace and Maen Gwynne.
“We sent one Duty Operations Manager, one Cymru High Acuity Response Unit and one emergency ambulance to the scene.
“We were supported by colleagues from the Emergency Medical Retrieval and Transport Service.
“Three patients were transferred to University Hospital of Wales, Cardiff, and two patients were transferred to Morriston Hospital, Swansea, for further treatment.”