The Criminal Assets Bureau has confirmed it is continuing its investigation into the outcome of the Moriarty Tribunal.
The Bureau contacted Allied Irish Bank as part of its probe, according to information in the Paradise Papers that has been reported in the Irish Times.
This request for information related to an Isle of Man account that was in the name of Aiden Phelan, a former financial advisor to businessman Denis O'Brien.
The account was the focus of attention in the Moriarty Tribunal, due to alleged payments to former minister Michael Lowry.
A spokesperson for Mr O'Brien had declined to comment.