U.S. agents in southern Arizona said Thursday they seized up to 440 pounds (about 200 kilograms) of what they suspect is a precursor chemical often used to manufacture the dangerous drug fentanyl, a chilling sign that producers may be moving to manufacture the deadly synthetic opioid on American soil.
The powdered chemical was being transported Thursday morning from a residence and warehouse in Tucson, where it had been sent in recent months in a series of suspicious packages from China that did not identify their contents, said Leo Lamas, the deputy special agent in charge for Homeland Security Investigations in Tucson.
