GARDA Commissioner Martin Callinan has issued a fresh plea to members of the public, who are concealing information about the murderers of Detective Garda Adrian Donohoe, to examine their consciences.
He urged anyone hiding potential evidence to contact the 100-strong investigation team at Dundalk garda station or phone the confidential line.
Mr Callinan said that almost everybody wanted to see the investigation brought to a successful conclusion and the killers brought to justice.
He explained that while the gardai were making progress, they needed the co-operation of those in possession of details about the killers, the circumstances surrounding the raid at Lordship Credit Union and subsequent shooting of Det Gda Donohoe (pictured) or the theft of the VW Passat used in the gang's getaway.
Mr Callinan will travel to Dundalk tomorrow to chair a case conference and will be accompanied by the deputy commissioner in charge of operations, Ms Noirin O'Sullivan, and the officer leading the manhunt, Assistant Commissioner Kieran Kenny.
While he is receiving daily briefings on developments, he will be given a full breakdown on the investigation to date during the conference.
Members of the gang suspected of being responsible for the murder are living in north Louth and south Armagh and are known to officers on both sides of the Border.
Several of them are also being linked to previous crimes in the area including robberies, burglaries, fuel theft and traffic offences.
Officers say they are trying to build up files on each of the suspects while also cross-checking notes on the past crimes to determine a pattern of behaviour by gang members.
"It is crucial for us to know as much as we can about these suspects to build up our files and a number of people could have what they regard as scraps of information that could prove useful to us when put in context," one officer said.