The incident occurred earlier this morning.
A male pedestrian in his 30s was fatally injured following a collision involving a van at 4.15am on September 30.
The collision occurred on the Naas Road inbound at Kingswood Co Dublin.
Gardaí and emergency services attended the scene.
The injured man was pronounced dead at the scene a short time later.
Garda forensic collision investigating officers are at scene and the road is currently closed to traffic. Local diversions are in place.
Gardaí investigating the incident are appealing for witnesses to contact Clondalkin Garda Station 01-666 7600, the Garda Confidential Line 1800 666 111or nay Garda Station.