A WOLLONGONG man who murdered his de facto wife and their two young sons after a sexual fantasy turned to jealousy will walk free from prison after serving 16 years behind bars.

Sandor Cikos was sentenced to at least 15.5 years jail in February 2001 for the murders of his partner Allison Penrose and their sons Jake, 4, and Travis, 18-months, in their West Dapto home in December 1999.

A Corrective Services spokeswoman told The Daily Telegraph Cikos had been granted parole and would be released later this month.

Cikos beat and choked Ms Penrose in the couple’s bedroom before choking the two boys in their beds.

Several months before the killings, Ms Penrose asked Cikos to have sex with one of her friends as she watched on.

media_camera Travis and Jake were choked by their father in December 1999.

media_camera The West Dapto home, with Christmas lights up and police mobile command outside, where Cikos murdered his de facto wife and two sons. Picture: Glenn Campbell

But reality failed to live up to fantasy and Ms Penrose became overcome with jealousy, unleashing physical and emotional abuse on her partner over the months leading up to the murders.

“The deceased in her arguments with the prisoner appears to have taken the position that although she initiated the sexual activity with her girlfriend, the prisoner was nevertheless to blame because she and the girlfriend were drunk,” Justice John Dunford during Cikos’s sentencing.

“No one, not even the prisoner, was told that she had sex with another man earlier that evening in the other room.”

The court also heard Ms Penrose had threatened to harm Cikos if he didn’t kill the other woman by February 2000 or went to authorities about her threats.

“She told him if he went to the authorities or left home, she would arrange for something to happen to him,” Justice Dunford said.

media_camera Ms Penrose with Jake and Travis Cikos.

media_camera Cikos, who initially claimed he had returned home to find his family dead, comforted his mother Ilona at the funeral for Allison, Jake and Travis.

media_camera Cikos was to address the media and plead for the ‘killers’ to come forward but cancelled at the 11th hour at the urging of his legal team.

“He felt he had to do something and killing her seemed to be the only thing he could do.’’

Cikos told the court during sentencing submissions he was pushed to killing his wife as the deadline for her threats loomed.

“I had thought about it as an option but I hadn’t actually made my mind up about any option before the night [of the murders],’’ he said.

“I didn’t know what she was going to do, time was running out.’’

He told the court he killed the two boys to “stop the pain” they would go through knowing their father had murdered their mother.

Cikos initially told police he had returned to their double storey home after work to find his family dead.

He had planned to make a public appeal calling for their killers to come forward but cancelled at the 11th hour on the advice of his legal team.

Investigators arrested Cikos almost seven weeks after the murders after DNA tests revealed traces of Ms Penrose’s blood were found on a necklace and bracelet found by police in a lunch box he owned and also on the shorts he was wearing on the night his family were killed.