The coroner who declined a full inquest into the suicide of a gay soldier is a Mormon church elder who attacked same-sex marriage in a submission to Parliament, saying it was an unnecessary "social experiment".
Gordon Matenga put the submission before MPs just three months before declining to open an inquest into the death of Corporal Douglas Hughes, 26, who took his own life in Afghanistan.
His submission brought a carefully worded rebuke from Attorney-General Chris Finlayson on the involvement of the judiciary in political issues.
Mr Finlayson said judges and coroners could make submissions "in appropriate circumstances" on well-established technical legal issues.
"It would be wise for members of the bench to avoid submitting on issues that could be seen as politically contentious."