On January 31, 2007, Boston police found a series of suspicious devices that they feared may be improvised explosive devices. It turns out that they were merely props in a marketing campaign for Aqua Teen Hunger Force, a TV show on Cartoon Network. The devices were placed there two weeks prior to the incident.
Artist Peter Berdovsky, who placed the devices around Boston, was arrested later that day. This is a video from Berdovsky's website, www.zebbler.com, showing him and his colleagues placing the devices.

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