The sergeant-at-arms of the ACT chapter of the Comancheros has been found guilty of a violent arson attack in an attempt to gain revenge on a rival who had defected to another gang.
Aofangatuku Langi didn't react on hearing the verdicts on Thursday, which took the jury about a day-and-a-half to return.
But later when they were being taken to the cells his accomplice Christopher Millington called out to the investigating officer, "Hey Ohlmus" and gave the officer the finger.
Much of the trial was heard in secret to protect two witnesses who were called to give evidence but the court later released heavily redacted transcripts.
The court heard Alexander Miller, the one-time Comanchero had patched over to the Nomads and was then his new club's sergeant-at-arms.
Langi was the Comancheros' sergeant-at-arms, a high-ranking role with responsibility to mete out punishment and discipline for gang members' indiscretions.
Prosecutors said Langi and Millington forced their way into the Kambah home in 2019 and Millington shot at the bathroom where Miller and his girlfriend were hiding.
They doused the place in petrol and set it alight before fleeing.
When Miller's then-girlfriend Natasha Rayner took the stand she revealed what it was like to be in a relationship with the bikie thug.
She told the court they had since broken up and that he had abused her throughout their relationship.
"He was the most manipulating, disturbed person I have ever met," she told the court.
Ms Rayner said they had got home that night and Miller was "wigging out" having taken a cocktail of drugs.
They heard a bang and Miller hurried his girlfriend into the bathroom
"I was crying and about two, three minutes later he got me out of the bath and and I opened the bathroom door and there were flames everywhere," she said.
On Thursday, a jury found Millington and Langi, both 32, guilty of the attack.
Millington had already admitted he was there but the jury found him guilty of a more serious charge that said he intended to endanger Miller's life.
Langi had denied he was there that night but the jury rejected his defence and found him guilty of the home invasion and arson.
It remains unclear what the jury based their verdicts on because much of the trial was behind closed doors.
The pair will be sentenced at a later date.
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