Dateline: Canada—A routine test of airport security turned into a Marx Brothers routine after security officers mistakenly sent a passenger home with a suitcase full of TNT. The TNT was supposed to be planted in the bags of a Montreal security agent. Instead, it somehow ended up stuffed into the luggage of an unsuspecting overseas passenger who arrived at Pierre Elliot Trudeau International Airport last Friday. The unnamed passenger went to a friend's house where he found the explosives concealed in a jam jar and placed inside his suitcase. The man immediately called Quebec provincial police. The TNT, which officials say had no detonator attached, was meant as part of a weekly test for bomb-sniffing dogs at the airport. Ironically, the dogs failed to detect the explosives. The passenger and his baggage were able to pass though airport security unchecked. “Our investigation is going to reveal exactly what happened,” airport security spokesman Pierre Goupil told TV network TVA.
About once a year or so we hear stories like this. Imagine if the explosives HAD been detected by security; this would have made international news. Since they weren't detected it's an obscure local story.