A man was arrested on Sunday after the car he was driving killed an elderly female pedestrian on the Navan Road in Cabra, Dublin.
The incident happened at about 8.15am on Sunday near the Maxol petrol station between Mary Help of Christians church and the Navan Road/Nephin Road junction.
The woman was taken to the Mater Hospital where she later died.
The 39-year-old man was taken to Finglas Garda station where he was questioned before being released. A Garda spokesman said a file is being prepared for the Director of Public Prosecutions.
The road was closed in both directions for a technical examination but has since reopened.
Gardaí are appealing for witnesses to contact them in Cabra Garda station on 01 6667400, the Garda Confidential Line on 1800 666 111 or any Garda station.
Meanwhile, a man in his 40s has died after a two-car crash on the Clooney Road in Derry early on Sunday morning.
A man and woman, both in their 50s, were taken to hospital for treatment to injuries but these are not believed to be life-threatening.
The road was closed to facilitate a detailed investigation of the scene and diversions were put in place.
On Saturday, 79-year-old man died after an Audi A4 and a Ford Escort collided at 2.25pm on the A3 Cavan Road near Newtownbutler in Co Fermanagh.
Police have named the man as Patrick James McGeough from the Monaghan area.
The PSNI is appealing for anyone with information about either collision to contact them on the non-emergency 101 number.
So far this year 43 people have died on the roads in Northern Ireland.