It happened at Annamarran, near Carrickmacross.
Two women and a 7 year old girl have been seriously injured after a crash in Co. Monaghan.
The two-vehicle collision happened just before 3pm yesterday afternoon on the N2 at Annamarran near Carrickmacross.
A woman in her 30s and a 7 year old girl from one of the cars were taken to Our Lady of Lourdes Hospital in Louth.
The driver of the second car, a woman in her late 50s, was airlifted to Tallaght Hospital in Dublin.
Gardai have examined the scene and want to speak to anyone who saw what happened.

BREAKING: DJ Carey Jailed For Five-And-A-Half Years
Kildare Superintendent Among Officers Promoted As Part Of Senior Garda Operational Reassignments
BREAKING: Man Arrested On Suspicion Of Murder Following Death Of Ryan Weir Gibbons In Kildare Town
"Hope At Last" - Horsepasstown Residents May Soon See End To Six-Year Boil Water Struggle
Kildare Among Worst-Hit Counties As Teacher Shortages Hit Special And Disadvantaged Schools
Focus Ireland Founder Sr Stan Dies Aged 86
Pearse Doherty Claims Government Misled Homeowners On LPT Hikes As Deadline Nears
Minister Announces Nationwide IPAS Security Review Following Drogheda Fire