Police in the Republic have insisted the hunt for the killers of Garda Adrian Donohoe is continuing with more than 100 |officers assigned to the case.
Almost a month after he was gunned down, gardai have urged anyone with information to come forward.
The renewed appeal comes after it emerged the reward for |information leading to the arrest of the suspected gang responsible for his murder will be doubled to €100,000 (£86,000).
It is understood that Crimestoppers will put up a further €50,000 (£43,000) to add to the €50,000 already offered by the Irish League of Credit Unions.
More than 100 officers are |involved in the hunt to find the gang that brutally slayed the father of two in an ambush outside the Lordship credit union in Co Louth on January 25.
The Garda Press Office rejected Sunday newspaper reports that the investigation was being wound down.
One source said: “There's specialist units coming and going. Some units would go down for a few days and then go again. There's no wind-down.”
Meanwhile, mourners were told at Mr Donohoe’s Month's Mind Mass that nobody should “dare to pervert the course of justice” by hiding the killers.
Mourners packed into St Joseph's Redemptorist Church in Dundalk to support his widow Caroline, her two children, Niall and Amy, Adrian's parents, Hugh and Peggy, and extended family.
Fr Michael Cusack said the investigation into the murder and the search for justice and convictions was important not just for the grieving family but also for our humanity to know that “justice can and will be done”.
Celebrating the Mass, Fr Cusack told the family that he knew of the “wonderful, generous outpouring towards them”.
“If people could change things they would,” Fr Cusack added.
But he said that as a society, we would not tolerate violence and that “we won't hide people that need to be brought to justice”.
“Nobody should dare pervert the course of justice if finding justice could bring peace and resolution to ease the pain the family were being forced to endure,” he added.