The couple were originally from England.
Milk found at the house of a couple whose bodies were discovered in Tipperary, has indicated they could have died in late 2020.
The bodies of 81-year-old Nicholas Smith and his 79-year-old wife Hilary are now believed to have gone undiscovered for more than 18 months.
Gardaí are looking to speak with the last person they were in contact with, in the hopes of establishing a concrete timeline.
Locals in the area have said the couple were private people who kept to themselves.
It was believed the couple had moved back to England, where they were originally from.
Southern Correspondent with the Irish Independent Ralph Riegel says it's also hoped a toxicology report will provide more clarity:
Minister Announces Nationwide IPAS Security Review Following Drogheda Fire
Man Arrested After Suspected Gun Incident On M4 Near Kilcock - Garda Cars Damaged
Man In His 30s Dies After Being Struck By Bus On N7 At Kill
Loved Ones To Say Final Farewell To Ryan Weir Gibbons On Friday As Funeral Details Announced
Kildare Animal Welfare Group Condemns Dog’s Death After Suspected Firework Attack In Meath
Pedestrian Hit By Bus On The Naas Road Near Kill
"Memories We’ll cherish Forever": Friends Mourn Ryan Gibbons As Murder Inquiry Begins
DJ Carey To Be Sentenced On Monday - Barrister Pleads For Leniency Citing His "Stunning Fall From Grace"
