The driver later presented himself to gardaí.
A man in his 80s has died after a hit-and-run road collision in Roscommon.
The pedestrian was hit by a car in Keadue, Co. Roscommon, at around 11 o'clock on Saturday night.
The man was pronounced dead at the scene.
The driver - a 20 year old man - failed to remain at the scene and later presented himself at Carrick-on-Shannon Garda Station.
A full forensic and technical examination is being carried out this morning and diversions are in place.
Gardaí are asking for anyone who may have seen the incident to come forward.