Another part of the HOP was established in Australia in 1963. The leaders of this group were Srećko Rover (from 1963 to 1967) and Stjepan Hefer (from 1967 to 1973). Many of this group's members were also members of the Australian Liberal Party. Some of them were said to have gone on military training exercises with the Australian Army Reserve, using the army's base at Wodonga in Victoria. Several members of the opposition Labor Party, including Justin O'Byrne, said that the HOP were using their status in the Liberal Party to hide many of these activities. When the Labour Party became the government in 1972, the Attorney-General gave the Australian Security Intelligence Organisation (ASIO) permission to spy on Srećko Rover and a few of the group's other members. This was because they thought they might be recruiting insurgents for an overseas war.