Mark Ciavarella, 57, was allegedly poisoned in his unit within the Congo, in central Africa earlier than his physique was tossed right into a crocodile infested river.
He had been working at worldwide colleges within the nation for six years.
His household from Leeton within the New South Wales Riverina area final heard from him in October.
His flatmate and lover has been charged with homicide and can face trial in March.
The Division of International Affairs and Commerce mentioned it's offering consular help to the Ciavarella's household.
"Owing to our privateness obligations, we're unable to offer additional remark," a spokesperson mentioned.