John McGuinness wants the former Garda Confidential recipient to be recalled to face further questions.
Oliver Connolly was sacked last week after the leak of a transcript where he told a whistleblower that the Minister for Justice would ‘go after him’.
Deputy McGuinness has claimed that Mr Connolly made questionable remarks to another whistleblower, this time a female.
He says Mr Connolly shouldn’t have been sacked until he could answer questions about his performance.