Gardai in Carlow are appealing for anyone with information in relation to a serious road incident to contact them.
It comes after two people were brought to hospital Wednesday afternoon following a collision between a car and a truck at Ballybannon.
The driver of the car - a woman in her 40s- and its passenger - a female teenager - were taken to Beaumont and the Mater Hospitals in Dublin with serious injuries.
The driver of the truck was unharmed.
Gardai are asking anyone who may have witnessed the collision to contact them.