GARDAI have insisted the hunt for the killers of Detective 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.
It is understood that Crimestoppers will put up a further €50,000 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 reports the investigation was being wound down.
It said: "An Garda Siochana continues its investigation into the murder of Detective Garda Adrian Donohoe and would like to renew their appeal for information, in particular anyone who noticed any suspicious activity in the vicinity of the Lordship credit union, Bellurgan, Jenkinstown, Co Louth, between 7.30pm and 9.30pm on January 25 last, or in the days preceding this."
Among the lines of enquiry being followed include the discovery of a burnt-out car two days after the fatal shooting, on the Keady to Newtownhamilton Road in Armagh.
The 2008 D-registered navy Volkswagen Passat was stolen at Clogherhead, Co Louth, between 11.30pm and 4.30am on the night of January 22/23.
A press conference will be held in Dublin tomorrow, where gardai will renew the appeal.
Sources said claims that the investigation was being wound down were incorrect.
"There's specialist units coming and going. Some units would go down for a few days and then go again," one said.
"There's no wind-down."