The Criminal Assets Bureau is considering seizing the €13m awarded to the owners of 20 acres of land at Carrickmines in Dublin used to complete the M50 motorway.
The land involved, owned by Jackson Way, is at the centre of a major investigation by the Mahon Tribunal after allegations of bribery to get the land rezoned.
Jackson Way originally sought over €100m for the use of land.
Yesterday, arbitrator John Shackleton ruled that Dun Laoghaire-Rathdown County Council should pay €12.86m to Jackson Way Properties as compensation for the compulsory purchase of 20 acres of its land at Carrickmines in south Co Dublin.
Dun Laoghaire-Rathdown County Council could also withhold the award unless Jackson Way can prove freehold title to the land.