Between 1980 and 1985, a campaign of shootings and bombings in New South Wales targeted judges and people associated with the Family Court of Australia. Over the course of the attacks, two people were shot dead, two were killed by bombs, a Family Court building was damaged by an explosive device, and a further unexploded bomb was found attached to a motor vehicle.
The attacks are considered to have begun on 22 February 1980, when Stephen Blanchard was shot dead in his home; his body was found six days later in Cowan Creek on the Hawkesbury River. On 23 June 1980, Family Court judge David Opas was shot outside his home and died later that night in hospital. On 6 March 1984, judge Richard Gee — who had taken over Opas's cases — was injured by a bomb at his home in Belrose, and on 14 April 1984 the Family Court building in Parramatta was bombed without injuries. On 4 July 1984, Pearl Watson, wife of Family Court judge Ray Watson, was killed when she opened the door of their unit in Greenwich and triggered an improvised explosive device; Judge Watson, believed to be the intended target, was injured. On 21 July 1985, a bombing at the Casula Kingdom Hall, a Jehovah's Witness venue, killed minister Graham Wykes and injured 13 others. Also in 1985, an unexploded bomb was found under the bonnet of a car in Northmead, at an address formerly linked to a solicitor who had acted for a woman in a Family Court case.
No one has been convicted of Blanchard's shooting. A A$500,000 reward offered in 1984 for information was never claimed. Two coronial inquests were held — in 1986 into Wykes's death, and in 1987, conducted by Kevin Waller, into Pearl Watson's death, which returned an open verdict amid frustration that insufficient evidence existed to charge the main suspect, who was connected in some way to all the victims. In 2012, the State Crime Command's homicide squad restarted the investigation.
On 29 July 2015, Leonard John Warwick, brother-in-law of first victim Stephen Blanchard and a "person of interest" in the original investigation, was arrested at Campbelltown, New South Wales, and charged with 32 offences including four counts of murder, one of attempted murder, and 13 counts of burning or maiming with an explosive substance. After pleading not guilty in March 2017, his judge-alone trial before Justice Garling began in May 2018 and, following numerous delays including the withdrawal of his legal aid representation, concluded on 6 April 2020. On 23 July 2020, Warwick was found guilty of all charges except the shooting of Stephen Blanchard. On 3 September 2020, he was sentenced to life imprisonment without parole; Justice Garling stated that Warwick's crimes "cannot be viewed as anything other than an attack on the very foundations of Australian democracy." Warwick died in prison on 14 February 2025.