Gardai are investigating a motor-cycle accident this morning(Sat) outside Bundoran on the N17.
The rider, a man aged 35, is said to be in a serious condition in Sligo Regional Hospital.
The accident happened at around 7.30 this morning when the motorcycle was in a single vehicle collision with the roundabout south of Bundoran on the road to Tullaghan.
The victim is a non-national believed to be Polish, with an address in Sligo town.
Gardai have sealed off the scene while a techinical examination by accident specialist investigators is currently being carried out.
Road diversions are place.
Gardai are not appealing for witnesses at this stage of the investigation.