Gardaí last night named the four Latvians and one Lithuanian who were killed in a two-car collision near Buncrana, Co Donegal, early on Saturday morning.
The three women and two men were the second group of five people to be killed in car crashes on the Inishowen Peninsula in the last four months, following the deaths of five young people near Muff last October.
Four of the five killed were travelling in the same car, a Volkswagen Vento, which was in collision with an Audi saloon at about 4.20am on Saturday.
They were the driver, Ricardas Bielskis (34), the only male in the car and the only Lithuanian involved; Ginta Veite (18); her mother, Aija Porcika (38); and Marita Kerpe (28).
It is understood the car had been returning from meeting a flight which carried Ms Veite from eastern Europe late on Friday.
All the dead, apart from Ms Veite, worked in the Buncrana area.
The man who died in the Audi was named as Danielitis Abartis (23). A second passenger in the Audi remained in a critical condition at Letterkenny General Hospital yesterday.
The two men and one of the women were pronounced dead at the scene.
The other two women were taken to Altnagelvin hospital where they underwent surgery but died a short time later.
Fr Con McLaughlin, who administered last rites at the roadside, said the scene was one of "carnage", with the dead and injured having to be cut out of the cars by the local fire brigade.
Fr McLaughlin, who last October administered last rites to the five young people killed near Muff, said he had come to dread the sound of the telephone in the early hours.
About 25 people, many of them young people, have been killed on the Inishowen Peninsula in the last two years.
Four extra gardaí and an additional sergeant have been deployed in the area as part of a pilot road safety programme.
Sgt John O'Keeffe of Buncrana renewed an appeal for witnesses to contact Buncrana station.
He offered his sympathies to the families of those involved and added that the general message was, "don't speed, don't drink and drive, and wear your seatbelts. In that way you will cut down the chances of dying on the road". In the light of recent deaths, he said, this was a "heartfelt plea".
"People should realise that if they stick to those three rules they will cut down on the chances of them being in a fatal accident."
Much of the efforts of gardaí in the immediate hours after the crash were concentrated on identifying the dead and contacting relatives in Ireland, Lithuania and Latvia.
Fr McLaughlin said a language barrier between the Irish and immigrant communities was a problem but had been overcome by talking to members of the Latvian and Lithuanian communities in Buncrana.
These communities were, he said, employed in a diverse range of services and industries and had not come to Inishowen in a large group to work for a single employer, which would have made it easier to identify the victims.
Local gardaí said they expect the bodies of the dead to be repatriated over the coming days.