Any of the usual horde of "Why does it only happen in North America?" droolers should have this paragraph stamped on their forehead. They will mostly be disappointed it wasn't a trans/brown/gay person mind you.

McDonald said police had responded to Van Rootselaar’s home for mental health-related calls over the last several years, with some of the calls concerning weapons. He said that, on at least one occasion, firearms had been seized from the home, and the lawful owner of the firearms had petitioned to have them returned.