The Integrated Homicide Investigation Team announced the arrest of 33-year-old Aaron James David Douglas just before 8 p.m. PT through their Twitter account.
Douglas, a suspect in the August double homicide of two men and attempted killing of a woman in Chilliwack, B.C., has a criminal record dating back to 1996.
Police identified the two homicide victims as Richard Blackmon, 38, and Tyler Belcourt, 36. Officers are not identifying the female victim.
A Canada-wide arrest warrant had been issued for Douglas just a few days after the victims were discovered.