The Sûreté du Québec (SQ) is investigating a triple homicide in Shawinigan, Que. in the Mauricie region overnight.
According to SQ spokesperson Christine Coulombe, the events started in a residence on du Lac-Marchand Street, in the Saint-Gerard-des-Laurentides district of Shawinigan, where a man killed two women before setting the residence on fire.
Police said there was a second incident at another residence on Ernest-Blais Road in Saint-Mathieu-du-Parc where a man and a woman were attacked and the residence set on fire.
The woman was pronounced dead and the man was taken to hospital in stable condition.
Sylvain Duquette, 51, was arrested at a service station on Trudel Street in Shawinigan, in a stolen vehicle.
He is being detained for questioning in connection with the triple homicide.
Police said the suspect and the victims were known to each other, but would not disclose the nature of the relationships.
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