Provincial police are investigating a triple homicide near Shawinigan.
Two women were killed inside a home on Lac-Marchand St. in Saint-Gérard-des-Laurentides, while a third victim, also a woman, was found in a home on Ernest-Blais St. in the nearby town of Saint-Mathieu-du-Parc.
One man, believed to be the husband of the third victim, was injured in the attack but managed to escape and alert a neighbour.
The suspect, a 51-year-old man, was arrested at a gas station north of Shawinigan.
Investigators said the suspect and victims knew each other, but it is too early to determine any possible motive.