Traffic to the east side of Sasebo Naval Base, Japan, was blocked for about three hours Tuesday while security staff searched for a suspected bomb, according to base officials.

No explosives were found after a search of a barracks building; traffic and pedestrian flow resumed by about 2:15 p.m.

A security department canine unit was performing a routine building sweep when a dog alerted to suspected explosive materials, base spokesman Chuck Howard said. A subsequent sweep found nothing and the dog did not alert a second time, Howard said.

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