A 19 year old man has died in a traffic accident in Inishowen.
He was a passenger in a car that left the road at Tooban near Burnfoot at about 4.30 this morning.
A second passenger - a 19 year old woman - is in a serious condition in Letterkenny General Hospital following the crash.
The 19 year old driver is also being treated for his injuries.
Garda Forensic Collision Investigators are carrying out an investigation and diversions are in place.
Gardaí are appealing for witnesses or anyone who was travelling on the main Buncrana to Derry Road, or in the vicinity of Tooban to contact them at Buncrana Garda Station on 074 - 9320540, The Garda Confidential Line 1800 666111 or any Garda Station.