An 18-year-old man has died after an accident in County Cavan.
A 16-year-old boy was critically injured in the accident on the N55 at Dundevan, Kilcogy, which happened just after midnight on Saturday night.
It is understood the car the teenagers were in left the carriageway and no other vehicle was involved.
The road has been closed as a result of the crash. The name of the dead teenager has not been released.
Three other people were killed in road accidents in Counties Dublin, Kilkenny and Offaly on Saturday night and Sunday morning.