NEW YORK (CBSNewYork) — A U.S. Customs building at John F. Kennedy Airport in Queens was evacuated Saturday afternoon after a screener found what appeared to be a grenade in a package on the premises.

The NYPD bomb squad was called to the scene at Building 77, a freight building. Authorities determined the object found was an inactive training device being shipped for military training purposes, authorities told CBS2.

Building 77 is not a terminal and there were no JFK passengers inside the building at the time.

Those occupying the building have since returned.

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