An "unattended box" at Miami Beach High shut down area streets as bomb-squad officers investigated.
Miami Beach police, the Miami PD bomb squad and Miami-Dade Schools Police were called to the school at 2231 Prairie Ave.
Car and pedestrian traffic, which were closed along Dade Boulevard from Meridian to Washington avenues, are back open.
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The box, which was empty, was found near the school's bus area.