Another name has been added to the list of Northern Ireland's Disappeared - people who were killed and secretly buried by republican paramilitaries during the Troubles.
It is the first time in more than ten years that the Independent Commission for the Recovery of Victims Remains has opened a new case.
Seamus Maguire was 26 when he disappeared from his home near Lurgan in Co Armagh, around 1973 or 1974.
The commission, established by the Irish and British governments, said his name has been added on the basis of information received from the PSNI.
"It is believed that republican paramilitaries were involved, though it is not yet clear which wing of the IRA was involved," said lead investigator Geoff Knupfer.
"As with all our cases, our sole aim is to locate and recover the remains to return them to Seamus' family. It is a purely humanitarian case."
In a statement, a spokesperson for Mr Maguire's family asked for privacy and urged anyone with information to come forward.
"Seamus was a much-loved eldest son," they said.
"His mother looked for him for many years. The family's wish is that he is brought home and given a Christian burial.
"The family urge anyone who can help the commission to do so, by providing whatever information they know about where Seamus is buried."
There are now 17 Commission cases, of which 13 have been resolved and the remains located and returned to their families.
The most high-profile case was that of widowed mother of ten Jean McConville, who was taken from her Belfast flat by the IRA in 1972.
A man walking on Shelling Beach in Co Louth found her remains in August 2003.
Mr Maguire now joins Joseph Lynskey, Columba McVeigh and Robert Nairac as the Disappeared whose remains have not yet been found and recovered.
Speaking on RTÉ's Morning Ireland, Mr Knupfer was only recently that fresh information was received that Mr Maguire was abducted and killed.
He said: "We've been aware of the case for a number of years, but it was simply treated as a missing person case".
Inquiries are beginning but no searches will be carried out at this stage.
In relation to other outstanding cases, Mr Knupfer urged people with any information to contact the Commission.
"We do appreciate these cases are now very old indeed, but we are absolutely convinced there are people out there who do have some detail that would give help to us".
