Steven George Armstrong, a thirty-nine-year-old invalid pensioner and father of two, was found murdered in his Henry Street unit in Plympton, Adelaide, South Australia, on December 23rd, 2002, just two days before Christmas. Police believe he had been dead for up to a month, placing the time of his death in late November or early December 2002. He was last seen alive and well at his home on November 24th.
Steven’s landlord discovered his body seated in the lounge room of the unit. He had been bashed and stabbed multiple times in what police described as a brutal attack. There were no signs of forced entry, suggesting that Steven likely knew his attacker or attackers. Nothing of significant value appeared to have been stolen from the property, and investigators found no clear motive for the killing.
Steven was known as a family man. His son, John Armstrong, was nineteen years old at the time of the murder. In 2012, on what would have been his father’s fiftieth birthday, John made a public emotional appeal for information, highlighting the lasting pain the unsolved case had caused. The family continued to seek justice in the years following the murder, with public appeals in 2003 and beyond.
South Australian Police conducted an extensive investigation but were unable to identify a suspect. Detectives explored several lines of inquiry, including the possibility that minor marijuana use had occurred in the flat and that casual visitors may have been present. Police emphasized they were not interested in minor drug-related matters and urged anyone with information to come forward.
As of 2026, the case remains open, and a reward of up to $200,000 has been offered for information leading to the conviction of those responsible.
Crime Immemorial 