Following a tip, Mexican troops in the state of Sonora in the north of the country found over 1.5 tonnes of meth and 328 pounds of what seemed to be powdered fentanyl at a checkpoint, the army said on Thursday. Arizona and Sonora are border neighbours.
Additionally, on Wednesday, soldiers discovered 816,486 tablets inside the truck that were allegedly stacked in 46 drums with fentanyl.
The Defense Department claimed to have learned that a truck transporting narcotics as well as powdered fruit juice concentrates to the border city of Tijuana.
Mexican cartels routinely warn authorities about shipments coming from other organisations.
Fentanyl, a synthetic opioid produced by Mexican cartels from components supplied from China, is then pressed into fake Xanax, Adderall, or Oxycodone tablets.
Overdose fatalities in the United States have significantly increased as a result of synthetic opioids like fentanyl.
Fentanyl has a fatal effect at doses as little as two milligrammes. The medication has 100 times the potency of morphine.
Many times, those taking the fake tablets are unaware that they are ingesting fentanyl. The increase in overdose fatalities is a result of it.