Gardaí remain at the scene of a fatal road traffic collision involving two vehicles that occurred at around 4pm on Friday.
The crash happened on the N77 between Kilkenny town and Ballyragget in County Kilkenny.
The driver of one of the vehicles, a man in his 30s, was removed from the scene and later pronounced dead at St Luke's General Hospital Kilkenny.
A female teenager who was in this vehicle was taken by air ambulance to Waterford University Hospital with serious injuries.
The three occupants, two males in their 40s and 60s and a woman in her 40s of the second vehicle were taken to St Luke's General Hospital Kilkenny for medical treatment. It's believed at this time that their injuries are non-life threatening.
Gardaí are investigating the circumstances of the theft of a vehicle at Green Street, Kilkenny at around 3:30pm on Friday.
A female teenager was an occupant of the vehicle when it was stolen. This vehicle was subsequently involved in the fatal road traffic collision.
The N77 between Hennebry's Cross and Dinan Bridge is currently closed and the services of Forensic Collision Investigators have been requested.
The road will remain closed for the next few hours and local diversions via the Castlecomer Road are in place.
Gardaí are appealing for any witnesses to either of these incidents to come forward to assist them with their ongoing investigations.
Anyone with any information is asked to contact Kilkenny Garda Station