In Co Louth, a 48-year-old man died following a three-car collision close to Castlebellingham at around 10.30pm on Sunday.
Preliminary indications are that his car may have been travelling southbound on the northbound carriageway.
A woman in the second car was taken to hospital with multiple fractures.
A mother and her 11-year-old daughter, who were in the third vehicle, were said to be “shocked” but otherwise unharmed.
In Co Limerick, three men were taken to hospital, one with serious head injuries, after the car in which they were travelling lost control and went off a back road at Ballycasey, near Kildimo.
There were reports that one of the men was found outside of the vehicle when emergency services arrived at the scene around 3am yesterday.
He was removed by ambulance to University Hospital Limerick, where he is being treated for serious head injuries.
The two other men are being treated in hospital for less serious injuries.
In Dublin, an incident of a more trivial nature led to a giant inflatable minion landing in the middle of a busy road.
A 10m replica of one of the eponymous characters from the Minions movie, came loose from its moorings on the Swords Road and fell into oncoming traffic, clipping the wings of a car.
Dublin city councillor Paul McAuliffe said that the incident may have seemed humorous at first glance, but it could have caused a serious accident on what is a busy road.
He has referred the matter to the planning authorities.
The accident happened yesterday afternoon during a particularly windy spell.
Elsewhere, tragedy was averted at sea in West Cork when Schull Inshore Rescue came to the assistance of a RIB with five persons on board.
The alert that a RIB was adrift came at 6.24pm. All ended well with the assistance of both the inshore rescue team and Baltimore Lifeboat.