Two men have died following a two-car crash in Co Donegal this afternoon.
Gardaí are investigating the incident, which took place at about 3.45pm on the main road between Lifford and Ballybofey, near the village of Killygordon.
The men, both in their 20s, were the only only occupants of one of the vehicles.
The female and male occupants of the second car are being treated for their injuries in Letterkenny General Hospital.
Gardaí have closed the main road between Lifford and Ballybofey, pending a full examination by forensic investigators. Diversions are in place, and the road is expected to remain closed until tomorrow morning.
Last night, a teenager (16) was killed in a car crash in Connemara, Co Galway. According to gardaí, he died when a car left the road and overturned at Lettermore at about 10.30pm.
The boy teenager, who was a front seat passenger, was pronounced dead at the scene. The driver was taken to University College Hospital in Galway with minor injuries.
Gardaí have appealed for witnesses to contact Salthill Garda station on 091 514720, the Garda confidential telephone line on 1800 666 111, or any station.
Last week, it was forecast the number of deaths on the Republic's roads this year is likely to be the lowest recorded. To date in 2009, 208 people have been killed, 42 fewer than last year. Insurance company Axa predicted the number of people killed on Irish roads this year could dip below 250 for the first time since records began in 1959.
That figure is nearly 100 fewer than in 2007 when 339 people died on Irish roads. This would put Ireland in the top five nations in Europe in terms of road safety.
The introduction of random breath testing and greater driver awareness has seen the number of those killed on the roads fall in recent years.
Meanwhile, over 100 people lost their lives on the North's roads so far this year, it was revealed today. Road safety week will see a series of events this week supported by the Department of the Environment, police and fire brigade.