ROXBURY (CBS) – The mystery behind a hazardous materials scare Wednesday in Roxbury has been solved.

Julian Street in Roxbury was shut down for a time Wednesday afternoon when someone found a mysterious box in a home’s basement.

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The box had a label on it indicating that what was inside was radioactive. So, the homeowner called authorities.

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After scanning the box, the fire department determined the box really wasn’t a threat.

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On Thursday, they opened the box and found a bunch of rocks.