G.P.M. Murray was appointed to the
Native Police in December 1857 as a 2nd Lieutenant. His older brother,
John Murray, had been in this
paramilitary force since 1852. George was posted to the
Dawson River region to assist in the reprisals following the
Hornet Bank massacre where he maintained an effective control without exercising unnecessary severity. In 1860, he was the officer-in-charge of the barracks at Robinson's Creek near
Taroom. In 1861 he was transferred to the
Rockhampton barracks and became a senior Lieutenant in the force. In October of that year, the
Cullin-la-ringo massacre occurred near the
Nogoa River and Murray mobilised his section to that region. He arrived with his troops at the police camp at Rainworth on 26 October. His force "shot a large number of aboriginals and recovered firearms and other property which had been stolen from Cullin-la-Ringo". With the reorganisation of the
Queensland Police Service in 1864 under
Commissioner David Thompson Seymour, Murray became more involved in the local administration of the Native Police rather than the more brutal field work. After Lieutenant Brown of the
Native Police had assisted in the capture of the famous
bushranger,
Frank Gardiner, to the north of Rockhampton, Murray was selected as a magistrate in Gardiner's initial trial. In 1865, Murray was publicly condemned by social identity
Gideon Lang for his sanctioning of a sequence of massacres of Aboriginal people conducted by sub-Inspector Otto Paschen and his troopers in the
Expedition Range. These "dispersals" were in response to the killing of Native Police officer Cecil Hill by Aboriginals near
Duaringa. In spite of these accusations, Murray was promoted in 1866 to Chief Inspector of the Police for the Northern Districts of Queensland, responsible for both civilian and Native Police forces in these regions. The following year, Murray headed an investigation into complaints against sub-Inspector Myrtil Aubin of the Native Police for the killing of eight Aboriginals in the township of
Morinish. Murray controversially concluded that it was clearly the duty of Aubin and his troopers to kill these people (which included old men and children) and "it is very much to be regretted that they did not do so quietly". In 1866, Murray was posted to
Springsure and retained his title of Chief Inspector until 1872. ==Police Magistrate==