Judges at the Mahon Tribunal have described as strange and cynical a decision by off-shore company Jackson Way not to cooperate with its inquiry.
John Caldwell, who is connected to the company, claims he cannot reach agreement with others involved in Jackson Way to allow him to hand over records.
However, it has been pointed out that the same company has managed to organise itself to pursue a multi-million euro law suit against a local authority here.
Mr Caldwell has been called to give evidence when the tribunal resumes in September.
Earlier, a former Dublin County Councillor John O'Halloran told the tribunal that the Labour Party had instructed him to avoid lobbyists at all costs.
Mr O'Halloran, who split from the Labour Party over his support for Quarryvale, has denied taking illicit payments from Frank Dunlop.
He said he was not given any instruction or training as a new Councillor but the Labour Party was against development and against developers and held the view that lobbyists were to be avoided.
He lost the party whip in 1993 after friction with party colleagues on Dublin County Council over his support for Quarryvale.
He said he supported the development, which is now the Liffey Valley Shopping Centre, because it was needed for the area.
Mr O'Halloran denies taking improper payments from Frank Dunlop but admits receiving at least four donations from the lobbyist in the 1990s.
