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 PITTSBURGH (AP) - A bomb threat led police to close the city's three major vehicular tunnels during the evening rush hour Thursday, causing serious traffic snarls.
Nothing suspicious was found, and all three were reopened within an hour, authorities said.
A caller to 911 said around 4:45 p.m. that a bomb would explode at 6 p.m. at a tunnel on a road referred to locally as the parkway, said state police Trooper Robin Mungo.
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