Reports are coming in that a light aircraft has crashed on Mount Leinster.
Emergency services were alerted after a hillwalker reported seeing the plane coming down.
Two people are thought to be on board the plane.
The Waterford-based helicopter, Rescue 117, is at the scene to search for the aircraft.
File photo of an emergency services helicopter
The South East Mountain Rescue Association and other emergency services are en route to the reported location.