Gardai in Mayo are appealing for witnesses to the fatal single-vehicle accident that occurred shortly before 5pm at Cloonkeen outside Castlebar on the R309 road.
Emergency services rushed to the scene with an 18-yr-old male was pronounced dead.
The road at the crash site has been closed tonight and early tomorrow morning with local diversions in operation. Forensic crash investigators have been requested to examine the scene.
Witnesses or anyone with dashcam footage is asked to contact Castlebar Garda station.