Distressed police recall officer's killing AS Sergeant Adam Fitzgibbon looked at a photograph of the crime scene where his colleague was killed in front of him, his face crumpled. Just over a year since 45-year-old Detective Inspector Bryson Anderson was killed during a confrontation at Oakville, near Windsor on Sydney's outskirts, his colleagues were visibly distressed as they recalled the events of that afternoon. Now a mother and son, Fiona Barbieri, 46, and Mitchell Barbieri, 20, will stand trial in the NSW Supreme Court for murder. After a short but emotional committal hearing in Central Local Court in Sydney on Wednesday, Magistrate Christopher O'Brien ruled a reasonable jury that was properly instructed could convict the pair. The crown alleges Mitchell Barbieri inflicted the fatal wound while his mother took part in a joint criminal enterprise. The court heard evidence from several officers who were called to the Barbieri home on December 6 last year, before being refused entry. As Fiona Barbieri yelled expletives at the officers, Det Insp Anderson attempted to reason with Mitchell Barbieri through a window before he eventually gave an order to kick the back door down, the court heard. As two large dogs emerged from the property, causing officers to deploy capsicum spray, Sgt Fitzgibbon said he saw Mitchell Barbieri standing over a gas cylinder in the hallway. Concerned for the safety of his colleagues, he said he stepped aside and yelled out a warning. But in that moment, he said "an arm lunged out of the doorway," striking Det Insp Anderson. It was quick. Extremely quick," he said. Sgt Fitzgibbon broke down upon being shown a photo of the crime scene and was given a short break to compose himself. He said the events of that day had left him "considerably distressed." Another officer, Constable Hannah Watson, also needed a break after she dissolved into tears as she recalled seeing Mitchell Barbieri strike out at Det Insp Anderson in a "punching motion." With her eyes stinging from the capsicum spray, Const Watson said she didn't see a weapon and initially thought the senior officer had just been punched. But she said she later briefly handled a knife as she struggled to subdue Mitchell Barbieri. Constable Ryan Mitchell, who was stationed outside the property, described his mounting fears for his colleagues' safety as he heard reports over the radio of an injured officer. "When I saw there was a significant amount of blood on my colleagues, I knew what had happened was very serious," Const Mitchell said. As a result, he said he would never forget what Fiona Barbieri said to him when she was dragged "yelling and screaming" to the police truck. She allegedly said, "It's his own f***ing fault. He deserved it," Const Mitchell said. No other officers who gave evidence on Wednesday heard Fiona Barbieri say that. The court heard varying accounts of what happened at the house, with Constable Mark Camilleri saying he believed Fiona Barbieri emerged from the property first. He said he later had "serious doubts" about this, but denied reading other police statements on the matter. "I've had a long time to think about this," he said. The Barbieris remained expressionless throughout the hearing and made no reaction when they were committed to stand trial. They are expected to enter pleas when they face the Supreme Court next February. Det Insp Anderson's elderly parents, who attended the hearing, said they were pleased the matter would proceed to trial.