WHEN Brett Kerry Foster heard his niece had been assaulted by her former partner he became enraged.
The 41-year-old Foster wrote a message on her Facebook wall threatening the man, before collecting a baseball bat and another man and driving to the man's Raceview home.
Little did Foster know the man he'd picked up to take with him was armed with a knife.
They arrived at the man's house, knocked on the door and burst inside. The man Foster had taken with him asked the man who answered the door if he was the one they were looking for and got into a fist fight with him.
Foster jumped around behind the fight, with his bat raised in the air. Suddenly Foster realised the man he'd come to bash had been stabbed four times and was seriously wounded.
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He panicked and the two home invaders fled. Foster pleaded guilty to entering premises to commit an indictable offence and grievous bodily harm.
The court heard the victim was left bleeding in his house with stab wounds to his chest, shoulder arm and abdomen. The court heard the wound to the abdomen was the most serious and needed immediate treatment.
Defence lawyer Steve Kissick said his client had acted in an "appalling" manner, and the victim was "in a fight for his life" when the two men entered the house. Mr Kissick said Foster was driven by intense family loyalty to take the law into his own hands after hearing his niece had been assaulted.
Foster had previously pleaded not guilty to the offence which had been taken to trial twice. It was set to be heard for the third time this month until Foster changed his plea to guilty.
Judge Sarah Bradley said he had made his intentions to bash the man known by posting the threatening comments online.
"Quite clearly … your intent was to inflict harm on the victim," she said.
"You left in the most cowardly way. You left a man bleeding in his own home."
She sentenced him to serve four years and three months jail, to be suspended for five years after he serves 18 months.
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