Around 2016, the United States and Canada reported a dramatic increase in shipment of carfentanil and other strong opioid drugs to customers in North America from Chinese chemical supply firms. In June 2016 the Royal Canadian Mounted Police seized one kilogram of carfentanil shipped from China in a box labeled "printer accessories". According to the Canada Border Services Agency, the shipment contained 50 million lethal doses of the drug, more than enough to annihilate the entire population of the country, in containers labeled as toner cartridges for Hewlett-Packard LaserJet printers.