Police officers are at the scene of an incident outside Withybush Hospital following a report of a car in collision with pedestrians around midday today.
An infant has been airlifted to Cardiff for treatment.
A pedestrian, the driver of the car and a passenger have all been taken to hospital for treatment.
There will be a police presence outside the hospital for a number of hours as officers investigate the circumstances surrounding the collision.
If you are deaf, hard of hearing, or speech impaired text the non-emergency number on 07811 311 908.