SOUTHEAST WISCONSIN (CBS 58) -- Federal officials are warning about the rise of crystal meth use in Southeast Wisconsin.

The U.S. Attorney for the Eastern District of Wisconsin says the amount of the drug being brought to the area has increased just in the last year. 

He says the meth being imported comes from Mexican drug cartels using creative methods to get it across the border.

"We should see the increase in meth as another chapter in the opioid crisis," said U.S. Attorney Matthew Krueger. "Because what we are seeing is the drug traffickers don't just deal in one substance. They're poly-drug traffickers. And so the same traffickers are manufacturing all sorts of drugs, and the traffickers are bringing it in."

Krueger says the recent rise is unprecedented. He adds meth is frequently being mixed with fentanyl, which makes the drug even more lethal.