The CFMEU administrator, Mark Irving KC, sent two teams of investigators away, despite their expertise in integrity and experience in uncovering corruption.
These teams were assembled to investigate graft within the union but were swiftly disbanded, leaving serious misconduct allegations unaddressed for months.
As a result, suspected corrupt officials took on key roles within the embattled union.
Three confidential sources who worked for CFMEU administrator Mark Irving KC confirmed that he failed to enact advice to seek more powers from the federal government to deal with wrongdoing.
A former AFP officer, Chris Craner, was recruited to help investigate wrongdoing at the CFMEU, but the investigation was hindered.
One source stated that Irving was concerned that seeking more powers could risk reviving calls for the coalition's Australian Building and Construction Commission.
CFMEU administrator Mark Irving KC hindered corruption investigation.