The national security watchdog is considering investigating former Home Affairs Minister Peter Dutton.

The investigation concerns Dutton's failure to disclose a report questioning the reliability of a tool used to keep convicted terrorist Abdul Nacer Benbrika detained.

The report, prepared by Australian National University researchers, was withheld, raising concerns about interference with the administration of justice.

Justice Elizabeth Hollingworth criticized Dutton's handling of the report, leading to potential further investigation by the Independent National Security Legislation Monitor.

Benbrika, due for release in 2020, faced a continuing detention order application due to national security concerns.

The non-disclosure of the report has led to calls for an inquiry into the handling of the case, with implications for other terrorist offenders.

Benbrika is now in the community under strict conditions, including a curfew and participation in de-radicalization programs.

The investigation into Dutton's actions may have broader repercussions in the treatment of individuals deemed security risks.