Police say 62-year-old George Morris found the bag in the garbage and hung it on the sign for someone to claim after rifling through it and finding nothing of value on Aug. 18. Morris hails from Johnson City, Tenn., and could not immediately be reached Wednesday.
Police summoned a bomb squad because they have strict rules for handling abandoned packages and bags.
The response tied up downtown rush-hour traffic before crews detonated the package about two hours later. Because it was hung from the sign, it was too high for police dogs to sniff and for a robotic camera to examine.