Brouillard Lessard had been charged with several violent crimes dating back ten years, according to court documents.
Last year, he pleaded guilty to assault and was sentenced to two years probation and 200 hours of community service.
Between 2017 and 2018, he was found not criminally responsible for two assaults and uttering death threats.
In 2013, he was charged with threatening to cause death or harm. He pleaded not guilty and was found not criminally responsible.
Brouillard Lessard's lawyer, Yanick Peloquin, says his client was due to appear in May before Quebec's mental health review board -- Commission d'examen des troubles mentaux du Quebec.
The review board found in March 2022 that Brouillard Lessard posed a "significant risk to public safety" but determined that the risk could be adequately controlled if he would be properly monitored.
That March 2022 decision is one of several issued by the board about Brouillard Lessard since 2014.
Sgt. Maureen Breau, killed during an arrest, had been on the force for 20 years.
"In his head, he was not sick. The others were crazy, and he was too smart for the others," said Ludovick, a pseudonym for the source who spoke on the condition of anonymity.
"He was a guy with an explosive character," said Ludovick, recalling a time when Brouillard Lessard bragged to him about one of the assaults that landed him in court.
Ludovick believes his former friend should not have been released from institutional care.
"For the safety of everyone around, you couldn't let a guy like him go into society and think he was going to fend for himself," said Ludovick, who says he last spoke to Brouillard Lessard in January.
The mayor of Louisville also expressed the same concern on Monday.
"He shouldn't have been here," Yvon Deshaies told reporters. "He should have been in an institution, getting healed. He was sick."
Sgt. Breau was in her early 40s and had two children. She had spent two decades with the police force.
The head of the provincial police union told reporters Tuesday that Breau, a sergeant with more than 20 years experience on the force, was due for a promotion in four days.
Her death drew an outpouring of support from her family and colleagues.
Breau's sister, reached on Facebook, said the family was asking for privacy. "My big sister will always be my hero," she wrote in a message to The Canadian Press.
Quebec Premier Francois Legault called the event "appalling" online. He said he would work with the province's minister responsible for social services to ensure that mental health cases are treated urgently when a person is deemed a risk of violence to themselves or others.
NDP Leader Jagmeet Singh is pushing for special rapporteur David Johnston to 'step aside' from his role examining the issue of foreign interference before he embarks on public hearings.
New Democrat MP Jenny Kwan said Monday that Canada's spy agency has confirmed her long-held belief she is being targeted by the Chinese government, as the prime minister granted the NDP's wish to allow more party members to review top-secret intelligence.
William Karlsson, William Carrier and Jonathan Marchessault are finally getting another chance in the Stanley Cup Final, after the first one that came so quick for the Vegas Golden Knights.
Eastern Conference finals Most Valuable Player Jimmy Butler scored 28 points, and Caleb Martin had 26 points and 10 rebounds to help the eighth-seeded Miami Heat beat the Celtics 103-84 in Game 7 on Monday night and advance to the NBA Finals for the second time in four seasons.
Canadian political leaders and parliamentarians are denouncing a new law passed in Uganda that imposes harsh penalties, including the death penalty, for certain cases involving homosexuality.
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One long-time electoral tradition came to an end on election day, when Postmedia announced there would be no printed newspaper announcing the winner in Calgary.
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Doctors in their final year of training, called residency, can choose to do a one-month rotation at the Shelter Health Initiative (SHI) caring for Windsor’s homeless population.
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One person from Estevan, Sask. is dead and another is seriously injured following a collision between a pickup truck and a motorcycle on May 28 near Fortuna, North Dakota.
The Sandy Hill Child Care Centre has an extra two weeks to get its new home up to code months after a fire destroyed its original site on Wilbrod Street.
Ottawa police are praising a local dad for quickly calling for help Sunday afternoon when he accidentally locked his keys in his car, and his infant child along with them.
Ontario Provincial Police say a driver from Augusta Township is facing an impaired driving charge after someone on Highway 416 spotted a vehicle moving erratically.
In a province where there are vast distances between cities and towns, one local group is hoping to get public support for an idea to bridge those gaps with a rail line.
Sgt. Maureen Breau, killed during an arrest, had been on the force for 20 years. 
