Two south suburban men are facing federal charges for allegedly importing and conspiring to sell a synthetic drug from China that mimics the effects of the powerful opioid fentanyl.

Last fall, 35-year-old Sanchez Lackland and others had the drug analogue shipped through the mail to roughly 19 addresses in the Chicago area, according to an indictment returned Wednesday in U.S. District Court in Chicago.

In December, law enforcement agents searched Lackland’s home and uncovered heroin, acrylfentanyl and methoxyacetylfentanyl, which was allegedly shipped from China, prosecutors said. During the search, agents also found roughly $30,000 in cash and a loaded revolver Lackland wasn’t legally allowed to possess as a convicted felon.

On Dec. 12, agents followed Lackland as he dropped off a package at 35-year-old Jermol Mixon’s Orland Park home, prosecutors said.

A subsequent search of the home uncovered more of the same drugs Lackland was found with, as well as materials used to manufacture drugs and $10,000 in cash, prosecutors said. Agents also found Mixon, a convicted felon, “within arm’s reach” of a handgun he wasn’t legally allowed to possess.

Lackland and Mixon were both charged in connection with the scheme to import and distribute over 100 grams of the fentanyl analogue, prosecutors said. Both men also face gun charges.

They are scheduled to be arraigned on Wednesday.