Disturbing discovery at $4.5million home of crazed gunman Mark Bombara who shot dead a mother and her daughter in their Floreat home while looking for his ex-wife in horrific murder-suicide

A crazed ex-husband who shot dead a mother and her daughter before turning the gun on himself while searching for his ex-wife had 13 guns in his home.

Mark Bombara, 63, stormed Jennifer Petelczyc’s home in Floreat, in Perth’s western suburbs, at around 4.30pm on Friday, looking for his ex-wife Rowena.

Unable to find her, Bombara instead fatally shot her 53-year-old friend and the woman’s daughter, Gretl Petelczyc, 18, before turning the gun on herself.

Police searched the 63-year-old’s home in Mosman Park on Saturday following the gruesome double murder.

The weapons were seized from the home, including handguns and at least two pistols, all of which were legally registered to Bombara.

Bombara had purchased the $4.58 million two-story home on Hutchinson Avenue with his then-wife in 2019.

A family friend of Ms Petelczyc told Daily Mail Australia the mother-of-two confided she feared for her family’s safety after learning Bombara was driving around with a Glock under the seat of his car as he searched for his ex-wife.

Rowena has been staying with Ms Petelczyc on and off since fleeing her home in April amid an acrimonious divorce with her husband.

The family friend said his mother was told by Ms Petelczyc that she was unsure whether she should tell her children that Bombara was a threat to their safety.

He said his mother urged Ms Petelczyc to tell her two daughters, Gretl, 18, and Liesl, 23, about her concerns because they were now adults. door.

The family friend said Peteczyc regularly visited his parents, seeking legal advice from his lawyer father on ways she could protect Rowena and her children.

He said the last time his parents saw Ms Petelczyc was two weeks ago and his father shouted at her as she walked down the driveway, “don’t forget to report it.” [Bombara driving around with a gun] to the police’.

Ms Petelczyc shouted back: “I will” before turning around and going home.

The family friend said they are unsure whether or not Ms Petelczyc reported the matter to police.

Daily Mail Australia was told by WA Police that they have been unable to find any records showing Ms Petelczyc has reported the incident to police.

The family friend said if Bombara, who was part of a local gun club, was reported to police, he does not understand how he would have been allowed to keep his firearm if there was a fear of violence.

Rowena left the home she shared with Bombara on Easter Monday, April 1, seven weeks prior to the double suicide.

Police officers were seen in the driveway of the property as the mother of four gathered and removed her belongings.

Neighbors said they were unaware there was a serious domestic dispute between Rowena and her husband. The Western Australia reported.

Rowena, who was often gardening in her garden, was described as ‘very friendly and helpful’ and always up for a chat over the fence.

Meanwhile, her ex-husband was labeled as distant, unusual and with a huge ego.

In addition to weapons, Bombara also had a passion for real estate and followed in the footsteps of his father, who made a name for himself as an appraiser and property developer.

Bombara had been involved in 38 developments carried out by his family, including being listed as project manager for a Highland estate in Bridgetown.

The 63-year-old specialized in buying acreage, repurposing it and then selling the individual parcels.

His property interests and dealings also landed him in court, including one case in which he sued his own brother, Hugo, after selling family land in Betram.

Bombara sent an email pressuring Hugo to avoid the transaction after his brother refused to sign a permit to sell the property.

‘The latest episode shows that you are unable to make perhaps the most important decision regarding this property and for the benefit of all owners. . . “It is on this basis that I demand that you be removed from the decision-making process,” the email obtained by The West said.

“You can do it voluntarily by notifying me immediately, or I will initiate proceedings in a court of appropriate jurisdiction.”

Bombara also had a protracted battle with Western Power after the company installed electricity cables across one of its plots.

He claimed that the move made him feel “wronged” and “cheated by the system,” adding that the company owed him millions of dollars in compensation.

In 2008, the utility offered Bombara $40,000 in compensation, but he rejected the deal and demanded $19 million plus costs.

The State Administrative Tribunal published a judgment in 2021 disagreeing with Bombara’s claims.

The tribunal ruled that the property was properly considered rural and awarded Bombara a total of $18,088 in compensation – less than half of Western Power’s original offer.

Bombara tried to argue the outcome in the Supreme Court, but was unsuccessful.

Earlier this year, Bombara created a website to compile a family history for his four adult children whom he shared with his estranged wife.

“We are also trying to compile a detailed family history for our website,” the page reads.

‘Come in, look around. If you know anything about our family’s history that we haven’t mentioned, please let us know.’

The website claimed to contain information about his family, along with a family photo album. However, the only photo available is a photo of Bombara itself.