A coronial inquest in Perth has heard that Mark Bombara, who murdered Jennifer Petelcyzc and her 18-year-old daughter Gretl in their Floreat home, inadvertently recorded himself firing shots on one victim's phone, ABC News reported on 12 November 2026. Senior Sergeant Nathan Carbone of the WA Police Homicide Squad told the court Bombara shot Jennifer, then Gretyl, then grabbed Jennifer's phone and recorded himself firing two more shots. Whether the recording was audio or video is not known. Bombara forced his way into the home in 2024 while searching for his estranged wife, who was a close friend of Jennifer, and later took his own life.

The court heard that weeks before the murders, police attended the family home after Rowena Bombara and her daughter sought help moving their belongings. Constable Shaun King told the court Bombara seemed the "opposite" of what he expected, offering refreshments and access to his gun safe, which the officer declined to inspect but said in hindsight he "should have" checked. Superintendent Andrew Wilson, who reviewed body-worn camera footage, described the encounter as manipulative and calculated, aimed at placing doubt in the officers' minds.

Superintendent Wilson said police policy had changed since the murders: firearms are seized and domestic violence perpetrators are removed from the home before family members retrieve belongings.