The cases will remain under review, but no new resources are being allocated unless fresh evidence emerges.
Gardaí have ruled out upgrading any further missing persons cases to murder investigations - including that of Naas man Trevor Deely, who vanished in Dublin in December 2000.
The decision, according to the Irish Times, follows a Garda review which led to murder inquiries being opened in the cases of Fiona Pender and Elizabeth Clarke, resulting in major search operations in Offaly and Meath.
However, the force confirmed no additional cases - such as that of Deely or schoolboy Philip Cairns, missing since 1986 - met the criteria for reclassification at this time.
The cases will remain under review, but no new resources are being allocated unless fresh evidence emerges.
Searches for Annie McCarrick's remains have been carried out in Clondalkin, following her case being upgraded to a murder investigation last year - three decades after her disappearance.

Setback For Monasterevin Fire Station As Site Sale Falls Through
Transport Users ‘Overwhelmed’ By Multiple Apps, Says TD
Kildare County Council Says "No Excuse" For Dog Fouling - But Won’t Provide Bag Dispensers In Maynooth
Government Moves To Let Gardaí Alert Schools After Domestic Violence Incidents
Aerosol Misuse In Kildare Raises Fears Of Sudden Death Risk Among Teens
New Housing Plan Could See Kildare County Council Bidding Against First-Time Buyers
Remembrance Service For JoJo Dullard: Parish Marks Three Decades Since Disappearance
Naas Special School Delay - 12 Children Promised A Place Still Not In Class