The use of Tasers "causes acute pain, constituting a form of torture," the UN's Committee Against Torture said. "In certain cases, they can even cause death, as has been shown by reliable studies and recent real-life events." Three men — all in their early 20s — died from after tasering in the United States this week, days after a Polish man died at Vancouver airport after being tasered by Canadian police. There have been 17 deaths in Canada following the use of Tasers since they were approved for use, and 275 deaths in the US. "According to Amnesty International, coroners have listed the Taser jolt as a contributing factor in more than 30 of those deaths."