Officers in Longford are investigating a serious single vehicle road traffic collision which occurred at Ferefad in the early hours of yesterday morning.
A vehicle carrying five people collided with a ditch on the Ferefad to Ballymacormack road at approximately 3.50am.
A 19-year-old man was seriously injured in the collision. Emergency services were called and he was rushed to the Midlands Regional Hospital in Mullingar. The driver and there other passengers were uninjured.
Witnesses to the collision are asked to contact Longford Garda station on 043 3350570, the Garda Confidential Line on 1800 666 111 or any Garda station.
Elsewhere, a 61-year-old motorist was killed in a single-vehicle collision in Kildare.
The man, named locally as Paddy Casey, was travelling in a van when it collided with a ditch between Athy and Kildangan at 9.30pm on Friday.
He was pronounced dead at the scene. His body was removed to the morgue at Naas General Hospital where a post-mortem took place yesterday.
In Galway, cyclist Kevin Smith (43) died on Saturday after he was involved in a collision with a car last Thursday.
Another man (61) was seriously injured after a two-car accident on the Ballinasloe to Athlone Road at Kilgarve in Galway on Friday night.
Gardai have launched several investigations into the collisions and are appealing for witnesses to contact them.