Five more young people have been killed on the roads this weekend.
A 17-year-old died last night in Co Kildare when his car went off a road into a canal. The crash happened at 6 pm near Skew Bridge on the Allenwood/Prosperous Road.
Elsewhere, gardaí in Co Offaly are investigating a suspected hit-and-run in Tullamore early on Sunday morning.
The victim, in his 30s, was found at the roadside in Cappincur at 4.40 am with serious injuries. He was later pronounced dead at Tullamore General Hospital.
Gardaí named him as 30-year-old Arunas Urbelis of Whitehall Estate, Tullamore, originally from Lithuania.
In south Dublin, a motorist in his 20s was killed on Saturday night when his car hit a pole on the M11 at Shankill at 9pm. He was taken to St Vincents Hospital where he died a short time later.
He was later named as 22-year-old William Day of Season Park, Newtownmountkennedy, Co Wicklow.
Gardaí at the Bridewell Station in Dublin are investigating the death of a motorcyclist whose bike collided with a car at 4am on Saturday on the Phibsboro Road. Three other people were injured in the crash.
The victim was later named as Zoltan Szafko a 31-year-old Slovakian with an address at Hempton Square, Navan Road, Dublin 7.
Gardai are seeking witnesses to this accident to come forward, in particular a taxi-driver who was in the vicinity at the time.
Meanwhile, a Latvian, Dace Leisavniece (23), with an address at in Trim, Co Meath, was named as the victim of Friday evening's two-car collision.
Ms Leisavniece was a back seat passenger in one of the cars that crashed at Bellinter Cross, Bellinter, Navan.