Up to 500 republicans in the North are being warned their lives could be under threat after police seized documents and computer disks belonging to loyalist paramilitaries.
Details, including photographs and addresses, were recovered by the RUC in two separate searches in north Belfast. Guns and pipe bombs were also found.
It is the biggest seizure of its type for over two years and has been linked to the Ulster Volunteer Force and the Red Hand Commando (RHC).
The RUC charged a number of people following the searches.
It could be some time before all those named were traced by a team of detectives and warned of the possible threat.
Some details are up to 10 years old but two or three of the entries were made between l997 and l999.
One package, wrapped in plastic, contained an estimated 150 names, a street map marked with Xs at various addresses and several photographs, including montages similar to others found before and surveillance photographs.
The names of more than 300 republicans were discovered in the second search. Police believe they were downloaded from a republican prisoners' Internet site.
The names of between 30 and 40 loyalists were also discovered.
All the information has been passed on to detectives investigating the killings of solicitors Mr Pat Finucane and Ms Rosemary Nelson.
Relatives and associates have claimed that there was collusion by security forces in the killings.
PA