U.S. Customs and Border Protection officers intercepted a shipment of what's called "gas station heroin."
The official name of the powdery substance is tianeptine.
It's not approved in the U.S. and is often sold illegally as a dietary supplement.
Authorities seized two parcels in New Jersey that were destined to Edgewater.
Both were labeled as "deep groove ball bearings" coming from Hong Kong.