Gardai in Mayo are investigating a single vehicle collision which occurred on Clare Island last night.
One man died after his car collided with a ditch.
The male teenager died when the car he was driving collided with a ditch at The Quay, Clare Island at approximately 1am this morning.
He was pronounced dead at the scene, however his age has not been released yet.
Gardaí at Louisburgh are investigating the single vehicle crash.
The road has been closed to facilitate an examination by Garda Forensic experts.
Gardaí are appealing to anyone with information to contact Westport Gardai on 098-50230 or any Garda Station.
Is comes as the RSA has issued a warning to road users on this August Bank Holiday weekend.
The organisation says Sunday's are one of the most dangerous days of the week on Irish roads.
They are asking people to slow down and keep within the speed limit at all times