Oak Flats prison staffer Peter Dane admits punching ex-girlfriend and ex-wife on the same night

Peter Dane, a Community Corrections officers from Oak Flats, punched his ex-girlfriend in the face on the evening of December 5 last year following an argument between the pair over him wanting to rekindle their two-year relationship.

The 39-year-old then drove to his ex-wife's house in Albion Park, entered her home and repeatedly punched her in the head and pulled her hair, saying he was going to "destroy" her.

Read more: 'I don't want you alive': Barrack Heights man terrorised consecutive partners with death threats

Dane was arrested outside his ex-brother-in-law's house near Campbelltown later that evening and charged with a host of offences.

He pleaded guilty in Wollongong Local Court this week to charges of aggravated enter dwelling with intent, and two counts of assault occasioning actual bodily harm.

Documents tendered to the court reveal Dane and his ex-girlfriend had been in a relationship for two years, which had ended in mid-November.

However, he contacted her just after 5pm on December 5 and the pair agreed to meet at her house, where they began drinking and talking about the breakdown of their relationship.

At one stage the victim suggested Dane stay the night on the couch due to the amount of alcohol he'd drunk.

Dane then took the victim by the arm, prompting her to pull away and tell him to "f--k off".

Dane then punched the woman in the face, fracturing her nose.

She grabbed Dane's car keys and threw them onto the front lawn then attempted to drag him out of the house, yelling at him to get out.

Dane told her "this is your fault" then said "aren't you going to ask me to stay" before eventually leaving the property.

Read more: Man admits to vicious beer bottle glassing outside Wollongong hotel on Australia Day

He then drove to his ex-wife's house and banged on her front door.

She walked downstairs and the pair began yelling at each other, prompting Dane to pull the screen door from its frame and smash the stained glass panel in the side of the wooden door.

Dane then turned his attention to the victim's car, smashing her windscreen and both side mirrors before returning to the house and going inside.

He pulled his ex-wife's hair and punched her multiple times in the head, leaving her with a bleeding lip and bruising to her face.

She begged him to stop and tried to cover her face, but he continued assaulting her, saying he was going to make sure she "got nothing".

He left a short time later and drove to her brother's house in Rosemeadow. He was seen to exit his car carrying a six-inch alloy tyre wrench, which he put in his pocket as he walked up to the property's metal fence.

Police arrived at that moment and detained Dane.

When questioned, he said "that's my ex-wife's brother's house who had previously threatened me and I was gonna confront him."

"What were your plans with the tyre lever?" the police constable asked him.

"If I needed self defence," Dane replied.

"I was detouring here to confront him, because I knew I'm in enough shit as it is to confront him....I know I'm wrong, I'm not denying that."

Dane remains on bail and will face Wollongong District Court on September 11 for a sentencing date to be set.

Clarification: An earlier version of this story said Dane had pleaded guilty to a charge of breaking and entering with intent. That was incorrect. That charge has been withdrawn.