Philippe Steele Morin, 31, of Gatineau, Que., has been sought by police since Boisvert's body was found in the woods near Quyon, Que., on Jan. 23.
Boisvert, 36, disappeared on Jan. 17. Police later found blood in her Montreal apartment.
Montreal police have been leading the investigation but police from Ottawa have executed search warrants in an attempt to locate Morin.
Morin is wanted in both Ottawa and Gatineau on earlier charges, including domestic assault, vehicle theft, mischief, possession for the purpose of trafficking, possession of the proceeds of crime and breach of probation.
Morin is described as five-feet seven-inches in height and weighing 161 pounds. He short brown hair, blue eyes, has a tattoo of an eagle on his left arm and one of a dragon on his right.
Montreal police also said through the organization Jeunesse au soleil they are offering a $5,000 reward for information leading to the arrest and conviction in Boisvert's death.
Montreal police are asking anyone with information to contact Info-Crime Montréal at 514-393-1133.
Boisvert is considered Montreal's second homicide victim of 2014.