A major investigation in Arizona yielded $13 million worth of drugs, including 30 million potentially lethal doses of fentanyl

• About 30 million potentially lethal doses of fentanyl were found during an Arizona police investigation.
• The drugs were worth about $13 million and included substances like meth, cocaine, and heroin. 
• Fentanyl, a synthetic opioid, is the leading cause of drug overdose-related deaths in the United States.

The Arizona police announced a major drug bust on Thursday, where they seized drugs worth $13 million — including 30 million potentially lethal doses of fentanyl, a highly potent opioid.