The N15 Donegal/ Sligo road remains closed between Tullaghan and Magharacar roundabout in Bundoran following a road traffic crash yesterday.
One person was a serious condition in Sligo Regional Hospital this morning, it's believed they have since stabilised.
Two vehicles are believed to have been involved in the incident.
Local diversions are in place and motorists are asked to avoid the area and use the old Bundoran Tullaghan road.
The road is expected to re-open at lunchtime today.