The list, along with other Garda documents related to the murder case, were uncovered in a Garda raid on an apartment in west Dublin last Wednesday night.
A woman in her mid 20s, arrested during the operation, was released on Friday. She was questioned for two days on how the documents had come to be on her property. The law states that only defence lawyers, the prosecution and the Courts Service are allowed to have possession of jury lists.
Gardaí are now expected to offer security advice to men and women of the jury in a high profile case late last year. During the trial there were reports of witness and Garda intimidation.
The other documents seized are believed to relate to a criminal gang led by Dublin underworld figure Freddie Thompson. This group has been at the centre of the long running Crumlin-Drimnagh feud which has resulted in 16 murders over the last decade.
The woman arrested is not a member of the Thompson outfit.