A man who admitted to damaging his ex-girlfriend's home and behaving in a threatening manner was given a conditional discharge in Magistrates' Court yesterday.

Jonathan Chase Robinson pleaded guilty to causing wilful damage to Letitia Swan's Camp Drive, Warwick home and behaving in a threatening manner in October.

He originally admitted to taking two Samurai swords to her home, one with a 16-inch blade and the other was 10.5 inches long, but the Crown offered no evidence on those charges at his last court appearance on January 22.

The court heard in the summary of evidence from Crown counsel Maria Sofianos that Robinson and Ms Swan had been in a relationship for three years which ended after "irreconcilable differences".

Around 10.30 p.m. on Wednesday, October 17, Robinson went to Ms Swan's residence where she lives with her three children aged under 13, and tried to get her attention by knocking on the front door and a bedroom window but she ignored him. He called her but she still refused to let him in the house.

Ms Sofianos explained Robinson left but returned to the house and called her again, leaving several threatening messages — one of which made a reference to the three-year mandatory prison sentence for possession of a bladed article in a public place.

"I have three years. Three years of prison in my hand, right? Open up your door because if I have to come through I'm not going prison for nothing right? Open up your door," he told the victim, according to the Ms Sofianos.

Police were called after Ms Swan felt fearful for her and her children's lives and allegedly found Robinson "hunched down" outside, and the two Samurai swords near his motorcycle.

Robinson later changed his plea to not guilty after hiring lawyer Craig Attridge.

Mr. Attridge argued in October that his client had received no legal advice and had good reasons for having the bladed articles in his car.

He added Robinson was on private property at the time of the alleged offence, not public property.

Robinson's conditional discharge came with a slew of stipulations including abstaining from alcohol and controlled drugs, submitting to random drug testing, engaging in a substance abuse programme, continuing psychological counselling, being assessed for an anger management programme, participating in and successfully completing all programmes ordered by Court Services, refraining from associating with people deemed bad company, maintaining full time employment or enrollment in school full time and being present for a review in June.

Robinson agreed to the conditional discharged and was released from court.