investigations into specific breaches of Commonwealth legislation. The early 1930s saw the formation of the Peace Officer Guard with the aim of protecting Commonwealth property and interests. The Peace Officer Guard (POG) operated at such establishments as munitions factories, research facilities and certain Commonwealth Government departments. The Australian Security Intelligence Organisation (ASIO) came into existence in 1949, absorbing some of the functions of the Commonwealth Investigations Service and assuming new areas of responsibilities. The Commonwealth Police was re-formed in 1960, absorbing both Peace Officer Guards and Commonwealth Investigations Service officers. In 1975 the most ambitious plan to restructure Australia's national police service was attempted by the Commonwealth Government. An amalgamation of Commonwealth Police, Northern Territory Police and Australian Capital Territory Police forces, Department of Customs and Excise and Special Reports Branch of the Department of Immigration would have produced the "Australia Police". However, the amalgamation was abandoned later the same year following a change of Government. The bombing of the Hilton Hotel in Sydney during the Commonwealth Heads of Government Meeting (CHOGM) on 13 February 1978 prompted the Federal Government to commission an inquiry into Australia's national police service by former London Metropolitan Police Commissioner, Sir Robert Mark. As a consequence of this inquiry, on 19 October 1979, the Commonwealth Police and the Australian Capital Police Forces were amalgamated to form the Australian Federal Police which, shortly after, was expanded to assume the functions of the former Narcotics Section of the Bureau of Customs. The Australian Federal Police was initially established as a two component force, with General Policing and Protective components. As previously mentioned, prior to 1960, Federal Law Enforcement was carried out by two organisations, the Commonwealth Investigative Service and Peace Officer Guard. The primary function of the Protective Service Component of the AFP was to continue the duties which were originally laid down for the POG. On 14 December 1983 the federal government decided that the Protective Service Component of the AFP should be abolished and a separate, dedicated protective security service established. Subsequently the Australian Federal Police (Amendment) Act 1984 was passed by Federal Parliament and came into force on 19 October 1984. This resulted in the abolition of the Protective Service Component and on day one (20 October 1984) the establishment of the Australian Protective Service within the Department of Administrative Services with the transfer of 420 Constables under Section 9f of the Public Service