A Brisbane father who wrongly believed his neighbour was a pedophile has been jailed for a violent and protracted campaign against him.
George Koulouris, 46, lived next door to his victim in a unit block in Northgate where he assaulted the man nine times in five months in 2017.
He repeatedly pushed and pinned him over a series of encounters after making allegations the man was a child molester and was spying on his son.
Koulouris initially threatened violence against him and his family, recorded him and made abusive comments to him.
It escalated to the assaults in which the neighbour suffered lacerations and bruising to his abdomen and knees.
He also punched the victim's son.
"It seems your behaviour in this instance was a result of some misconceived idea that the complainant was going to harm your family," Judge Catherine Muir said.
"If this had been a genuine concern, it ought to have been taken to the police."
Koulouris was jailed for two-and-a-half years in Brisbane District Court on Thursday after Judge Muir labelled his offending "menacing and protracted".
"This is very serious threatening, invasive and very bizarre behaviour, in my view," she said.
"It seems to have been behaviour that escalated over time and it would have been a very frightening experience for the complainant."
Koulouris pleaded guilty to 10 counts of assault and a wilful damage charge.
The court heard he has a criminal history involving violence, drug and property offences stretching over 29 years.
Koulouris will be eligible for parole in January 2020.
Australian Associated Press