There is an appeal for any witnesses to come forward.
Gardaí at Navan in County Meath are investigating a single vehicle fatal road traffic collision which occurred at Gibbstown, Navan.
The incident is reported to have occurred at approximately 4am on Saturday, July 7 2018.
A 21-year-old male front seat passenger was fatally injured when the car he was travelling in crashed at the above location.
The 23-year-old male driver was injured and has been taken to Our Lady of Lourdes Hospital in Drogheda.
The stretch of road is closed to facilitate an examination by Garda Forensic Collision Investigators.
Gardaí wish to appeal for witnesses to contact Navan Garda Station on 046-9036100, the Garda Confidential Telephone Line on 1800 666 111 or any Garda Station.
As of Friday 6 July, Ireland has recorded 80 road fatalities, four more than on this date last year.
