Patrick Kelly who was shot dead in 1974
The family of an Omagh councillor who was murdered in July 1974 has withdrawn its co-operation from an investigation into his death.
Patrick Kelly, 33, went missing after locking up a bar in Trillick, County Tyrone.
His body was found in Lough Eyes, near Tempo, in Fermanagh three weeks later.
The Historical Enquiries Team (HET) began a fresh investigation into Mr Kelly's death two years ago, but his family have said they do not trust it.
The family's solicitor, Pat Fahy, said his clients had "serious misgivings" about the HET investigation "on account of the disappointments they had had in their dealings with the RUC and the PSNI".
It's understood the family are angry that a number of leads they believe should have been followed, were not.
"They left their misgivings aside and decided to give the HET team a chance. That chance has been thrown back in their faces again," Mr Fahy added.