The Federal Government has become embroiled in another salary cap scandal, this time involving a key official of the nation’s media watchdog, secret Ombudsman documents reveal.

The corporate regulator has completed its review into the expenses scandal that cost the jobs of its chair James Shipton and deputy Dan Crennan - but it’s refusing to disclose the outcome.

Up to $1 million of the $7.4m “cost” of the Wagga gun club development appears to be unaccounted for. It’s also revealed Wagga Wagga council approved the project even before NSW funding granted.

NSW Deputy Liberal Leader Stuart Ayres appears to have given false evidence to ICAC inquiry about his July 2016 visit to a Wagga Wagga gun club, that subsequently received a $5.5m grant.

The fund used to make the $5.5 million Wagga Wagga gun club grant was only created - by Dominic Perrottet as NSW Treasurer - months before Perrottet personally approved it.

The $5.5 million grant to fund a 1000-person convention centre at a gun club in Wagga Wagga was the only one - of over 90 grants - in the NSW Murray-Riverina region that went to a non-government entity.