This week, KIRO 7 learned 24 packages of fentanyl was allegedly mailed to a man who lives on Des Moines Memorial Drive South in Seattle.
On Monday, Gregory Lynn Smith was charged in US District Court with importing fentanyl from Asia.
Caleb Banta-Green, principal research scientist at the University of Washington's Alcohol and Drug Abuse Institute, told KIRO 7 "these fentanyl-type products that are generally made in China, that are often sold in powder form. There may be more of an internet marketplace for those.
According to documents, the 33-year-old was arrested Sunday at Sea-Tac Airport by investigators with the U.S. Postal Inspection Service as he returned from a trip to Hawaii.
While being questioned, Smith reportedly admitted "that he had been importing fentanyl from China via USPS for the last six months" according to a federal complaint.
According to Banta-Green, fentanyl can be 50-times stronger than heroin and is often sold in its powder form -- or used to make fake tablets. He said it's a dangerous situation.
[ Here’s additional information on how to help someone suffering from addiction. ]