One person has died following a road traffic collision in Inishowen overnight.
The single vehicle crash happened at around 3am on the main road between Muff and Quigley's point.
Gardai have advised that the section of road will be closed for much of the day to facilitate a technical examination.
Diversions are in place and motorists are being advised to use alternative routes.
Anyone who witnessed the crash is being urged to contact Buncrana Garda Station.