Australian authorities are investigating whether a state police minister broke the law by firing two banned weapons at a prison's gun range.
New South Wales lawmaker David Elliott referred his own case to police after photos emerged showing him with the guns at a 2018 opening for the range.
Australia bans civilian use of semi-automatic and automatic weapons but exceptions can be made with permission.
Both Mr Elliott and prison officials blamed it on an "administrative error".
Australian media reported he fired a submachine gun and a semi-automatic pistol at the newly refurbished range in Sydney in September 2018.
In NSW, someone who uses an unauthorised firearm can be jailed for up to 14 years.
