David Opas

David Louis Opas (30 June 1936 – 23 June 1980) was a judge of the Family Court of Australia. He was shot and killed during a period when a series of related gun and bomb attacks, killing three more people, were carried out against judges and other people connected to the Family Court.

On 29 July 2015 68-year-old Leonard John Warwick was arrested by detectives at Campbelltown, New South Wales over the shooting murder of Opas, bomb death of Pearl Watson, wife of Judge Ray Watson, two other murders, one by gunshot, and bomb attacks from 1980 to 1985, all related to the Family Court of Australia.

On 23 July 2020, Warwick was found guilty of the murder of Opas, and two of three other murders. He was also found guilty of numerous other offences, but not guilty of one shooting. Warwick was sentenced to life in jail without parole in September 2020 and died in prison on 14 February 2025.