Two people have been injured following an explosion at a house in Raphoe.
The explosion, a suspected gas leak, happened just after 10am on the outskirts of the town.
The two people have been taken to hospital but the extent of their injuries is not yet known.
It is understood that the house has been extensively damaged in the incident.
Fire tenders from Stranorlar and Strabane as well as a number of ambulances attended the scene.