A 73-year-old man in a long-running dispute with his condo board in a Toronto suburb has killed five people, including three neighborhood leaders, after claiming in court and on social media that the building in the electrical room in the apartment was making him sick.

York Regional Police Chief James MacSween identified the suspect in Sunday night’s attack in Vaughan, Ont., as Francesco Villi. He told a news conference on Monday that Villi shot dead three men and two women and injured a 66-year-old woman, who is hospitalized and expected to survive.

“Three of the victims were members of the condominium’s board of directors,” he said.

Police said officers responded to a report of a shooting at the building around 7:20 p.m. Sunday and that an officer shot Villi inside the building, where Villi and the victims lived.

Villi had long complained that vibrations and emissions from the building’s electrical room were making him sick, and that board members and the building’s developer were to blame, according to court documents.

MacSween said police are still investigating the motive for the attack, which occurred at three separate units in the building.

Special Investigations Unit spokeswoman Kristy Denette said police found the victims on different floors. He said Villi had a semi-automatic pistol and investigators do not believe he exchanged gunfire with the officer who killed him.

On Sunday and in the days leading up to the attack, Villi posted confusing videos on Facebook in which he discussed a legal dispute with the condo board.

In the videos, he claimed to have health issues caused by the building’s electrical room. The messages include recordings of phone conversations he had with lawyers about his case. In one of the videos she posted on Sunday, the apartment building’s attorney noted that the condo company asked her to sell her place and move out.

“This tragedy is driving me crazy. I’m sick anyway,” he said.

The attorney noted that an online hearing into her case was scheduled for Monday and that she was to go to the condo administration office, where the manager would help her get online.

Villi said on the call that he was not ready to present his case at the hearing. He also asked what the council wanted from him, to which the lawyer said the council needed him to stop harassing and yelling at people and to pay the condo corporation’s legal fees . She noted that the case had been dragging on for years.

” I can die in peace ? (It has been) seven years of torture,” Villi said.

In a video, he added: “They want me dead. They can take this body, but never this soul… I am ready to die”.

Villi filed a lawsuit against six directors and board members in 2020, alleging they “committed delinquent and criminal acts beginning in 2010”.

He also accused them of deliberately causing him five years of “torment” and “torture” related to problems he had with the electrical room below his unit, according to court documents. Judge Joseph Di Luca dismissed the lawsuit this summer, calling it “frivolous” and “vexing”.

According to court documents, the council sought a restraining order against Villi for his “allegedly threatening, abusive, intimidating and harassing behavior” toward the council, condo management, workers and residents.