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Killer's GP Saw No 'Red Flags' in Mental Health Review
Neurologist Kevin O'Connor said the strokes and 10 cm brain cyst were highly unlikely to explain the killings, though they may have contributed to depression.
On Tuesday, the inquest into the 2024 deaths of Jennifer Petelczyc, 59, and her daughter Gretl, 18, continued in Perth as neurologist Professor Kevin O'Connor testified that medical conditions were unlikely to have caused the murders.
Counsel assisting the coroner Rachael Young told the court that Mark Bombara became "fixated" on his failed marriage, while he suffered strokes and a 100-millimetre brain cyst that experts argued did not impair his planning ability.
Dr. Arwen Boyle testified she was unaware of the family's concerns before May 2024, recalling Bombara as a "sad man" seeking to rebuild his life rather than displaying warning signs of violence.
O'Connor stated the perpetrator's detailed planning—"disabling location software" and changing vehicles—demonstrated "computational thinking," directly countering the family's suspicions that medical conditions drove the violent behavior.
The inquest continues on Wednesday to examine the police response to eight triple-zero calls made before the murders and whether the gunman should have been licensed to hold the 13 firearms he owned.