Donald Bruce Mackay (13 September 1933 – 15 July 1977) was an Australian businessman and anti-drug campaigner. He disappeared in 1977, but his body has never been found. In 1986, James Bazley was convicted on his murder. Personal life and background Donald Mackay was born in Griffith, New South Wales, and raised in Sydney. His wife Barbara (1935–2001) was an active member of the Uniting Church in Griffith and was a part-time physiotherapist. The couple had four children: Paul, Ruth, Mary, and James. Mackay and his family ran a furniture business in Griffith called Mackay's Furniture. The family still owns a property in Griffith, but the furniture store was sold in July 2019. Lead-up to murder In 1974, Mackay stood as a Liberal candidate for the House of Representatives against Al Grassby in the electorate of Riverina. His preferences went to the Country Party candidate John Sullivan, allowing Sullivan to unseat Grassby. Mackay also stood for the Liberal Party in the state seat of Murrumbidgee at the 1973 and 1976 New South Wales state elections but was unsuccessful. Concerned about the growing illegal drug trade in his local area, and learning of a large crop of marijuana in nearby Coleambally, Mackay informed Sydney drug squad detectives, resulting in several arrests and the conviction of four men of Italian descent. At the trial of the arrested men, Mackay was identified as the whistleblower. An attempt was made to lure Mackay to Jerilderie by a "Mr Adams" who wished to make a large order of furniture from Mackay's business. Mackay, busy with other matters, sent employee Bruce Pursehouse to meet "Adams", who did not approach Pursehouse. This is believed to have been an attempt to assassinate Mackay. Pursehouse later identified a man he had seen at Jerilderie as a suspect in the Mackay killing. Murder On 15 July 1977, Mackay disappeared from a hotel car park after having drinks with friends and has never been found. Stains from his blood group were evident on his van and on the ground nearby, and his car keys were underneath the van. Nearby were drag marks, hair, and three spent .22 calibre cases. The Woodward Royal Commission found that the six prime suspects to the murder all had convenient alibis. On the night of the murder, Tony Sergi and Domenic Sergi, nominated as principal suspects by the Commission, were on a "pub crawl" in Griffith