GARDAI are receiving a substantial flow of information about the murder of Veronica Guerin, some of it from underworld figures who are said to have been shocked at the killing.
The gardai are also said to have made substantial progress in the search for the IRA killers of Det Garda Jerry McCabe and are searching for four remaining suspects, some of whom may have fled the State.
Gardai have been working around the clock to assemble information and leads in the Guerin investigation, but the night shift work is expected to be dropped this week as the flow of information and evidence subsides.
The investigation is still receiving the highest priority and the daily conferences at Lucan Garda station are being attended by the Deputy Commissioner with responsibility for operations, Mr Patrick Byrne. He led the operation which resulted in the discovery of the IRA arms factory in Co Laois 11 days ago.
The Garda still believe that the Guerin murder was carried out by a professional assassin paid for by one of five or six major Dublin criminals. No single suspect has emerged as a result of their investigations.
There is also a large number of theories about what led to Ms Guerin's murder but none has yet been chosen as the most probable.
Gardai believe a hired assassin, a man who has previously carried out gangland killings in Dublin, shot Ms Guerin dead when her car stopped at traffic lights on the Naas dual carriageway six days ago.
However, it is possible that associates of the Dublin gang leaders actually followed Ms Guerin's distinctive red Opel Calibra to Naas on the morning of her murder and that the final assassination was carried out by the freelance assassin.
After the murder, the gunman and his associate drove through the lights at the Newlands Cross junction and then disappeared southwards. No sign of their motorbike has emerged from this point.
The offer of £100,000 in reward money has, however, stimulated interest among the criminal fraternity in Dublin and gardai have been receiving tipoffs from some criminal figures. However, nothing of substance has yet emerged.
The Garda investigation has, until now, largely consisted of assembling and logging information. There will be no moves against any of the main suspects until there is a substantial reason to do so, a source close to the investigation said yesterday.
Meanwhile in Limerick, gardai are still seeking four IRA members who have not appeared at their homes since the murder of Det Garda McCabe last month.
At least two of the four men are regarded as highly dangerous and gardai have been warned to be very cautious about approaching them.
Surveillance and searches of known IRA safe houses continues. A total of 28 people have been arrested and questioned in connection with the murder of Det Garda McCabe. The last person was released from custody without charge at the weekend and none has been arrested since.