A 20-year-old man has died and two others have been injured in a single vehicle crash near Boyle, Co Roscommon.
The incident happened at Ardcarn, Boyle, on Wednesday, shortly after midnight when the car in which the man was a passenger struck a ditch.
He was taken to Sligo University Hospital where he was later pronounced dead. A post mortem is to be arranged.
The driver of the car and a second passenger, both male, aged 31 and 37 years, were also taken to Sligo University Hospital with non-life threatening injuries. No other injuries were reported.
The scene is preserved and will be technically examined by Garda forensic collision investigators.
The N4 remained open on Wednesday morning with a stop/go system in place at Ardcarn close to the junction with the R285, Keadue Road.
Gardaí have appealed for witnesses and anyone with information to contact them at Castlerea Garda Station on 094 9621630, The Garda Confidential Line, 1800 666111 or any Garda Station.