Siege gunman's ex-partner guilty of murder

Miranda Forster
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Verdict due in Monis ex-wife murder case

Lindt gunman Man Haron Monis's former girlfriend is due in court for the verdict in her murder trial

Amirah Droudis' twisted obsession with Lindt Cafe gunman Man Haron Monis has left her facing a long stint behind bars after she was convicted of the "hot-blooded and frenzied" murder of his ex-wife.

While Droudis, 37, was on Thursday found guilty of murdering the 30-year-old outside a Sydney unit in April 2013, the judge said it was the warped Monis who orchestrated the brutal attack after a bitter family dispute.

In handing down his verdict, Supreme Court Justice Peter Johnson said Droudis had become "enthralled" by Monis, who took advantage of her willingness to act at his behest.

"This was a hot-blooded and frenzied murder by an enraged female attacker," he said in his judgment.

"This crime had all the hallmarks of a frenzied attack by an angry amateur killer, acting in a manner consistent with Monis' desire."

The 30-year-old victim was stabbed 18 times, doused with petrol and set alight at a Werrington apartment block in Sydney's west by a woman in a long, black hijab.

At Droudis' judge-alone trial, her defence team suggested the assailant could have been another woman or a hired bikie killer.

But Justice Johnson rejected the theories as fanciful and inconsistent with the evidence.

He said Droudis had adopted Monis' view of the world, appearing in videos spouting his extreme beliefs and even helping him contact dead soldiers' families so he could inflict his twisted views on them.

"As at 21 April 2013, the accused (Droudis) was Monis' closest female associate, who had demonstrated a willingness to act as he wished consistently in the past," Justice Johnson said.

"I am satisfied that the only rational inference arising from the evidence is that it was the accused who carried out the murder."

Droudis stood in the dock and showed no emotion at the verdict.

Outside court, a friend of the victim's family said the judge's decision had brought "tears full of joy".

She said Monis had "gotten away with murder" and Droudis should be given a lethal injection.

Monis had been facing accessory to murder charges over the killing when he was gunned down by police in Sydney's Lindt Cafe in December 2014, ending a deadly 17-hour siege.

Droudis is due to face a sentence hearing on November 30.