UPAC officials carried out raids at the homes of the accused at 7:00 a.m. ET.
Two Revenue Quebec employees stand accused of providing privileged information about an upcoming government contract to a consortium made up of IBM and Quebec company Informatique EBR Inc.
UPAC officials allege the companies then used that information to design their bid, before the public call for tenders was launched.
The accused face fraud, breach of trust and conspiracy charges.