Two girls who died in a crash in Co Monaghan on Monday have been named as 17-year-old Kiea McCann and 16-year-old Dlava Mohamed.
They were on the way to the Largy College debs in Monaghan town when the crash happened on the Clones to Smithborough Road just before 7pm.
Gardaí have said the car left the road and hit a tree.
A man aged in his 60s remains in a critical condition in hospital in Belfast, while an 18-year-old girl is in a critical but stable condition in Cavan Hospital.
An 18-year-old boy who was a passenger in the car is being treated for non-life threatening injuries.
Cavan-Monaghan TD Brendan Smith earlier said everyone in the area was "absolutely shocked at this terrible tragedy".
"[The Debs are] a time of celebration, part of the school experience, young people go to their graduation - their Debs night - to celebrate,” he told The Pat Kenny Show.
“We are conscious of the excitement leading up to that and I heard people say the students had gathered in the diamond for the usual photographs getting together.”
Deputy Smith said the Debs are often the last time school groups formally gather together – and offered his sincere sympathy and deepest condolences to the families and loved ones of those involved in the crash.
In a statement, Largy College said everyone involved with the school was in “deep shock” after the accident.
Gardaí in Monaghan continue to appeal to anyone who may have witnessed this collision to contact them.
Any road users who may have camera footage, including dash-cam, and were travelling on the N54 between Clones and Smithborough on Monday between 6.15pm and 7.00pm are asked to make this footage available to them.
Anyone with any information is asked to contact Monaghan Garda station on 047-77-200, the Garda Confidential Line at 1800-666-111 or any Garda station.