The five people involved in last night's crash in Cashel in Tipperary are from the same family.
Three people - a young boy and his grandparents - died shortly before nine o'clock at Windmill, Knockbulloge.
They've been named as 45-year-old Thomas O'Reilly, his wife, 46-year-old Bridget O'Reilly, and 3-year-old, Tom.
They were all living at Waller's Lot in Cashel, and were well known in the locality.
Superintendent Kieran Ruane says two others are still receiving treatment in hospital: