The emergency services were called out to an incident on Trallwm Road in Llanelli on Saturday (May 7).
A car had collided with another car and overturned.
The incident happened at approximately 11.30pm.
A bystander said that they heard an ‘almighty bang’ and went out to see the car completely overturned.
The fire service attended with the police and it is understood that a man was taken to hospital.