The former head of Victoria's corruption watchdog has accused a Labor-dominated parliamentary committee of seeking to undermine its credibility for political gain.
In December, Independent Broad-based Anti-corruption Commission (IBAC) boss Robert Redlich wrote to parliament's speaker and president over concerns partisan politics had permeated the Integrity and Oversight Committee (IOC).
IBAC first became concerned when Canberra-based auditor Callida Consulting tipped off the body it had been directed by an audit subcommittee to "find dirt on IBAC and data that is not readily publicly available", Mr Redlich said.