CHICAGO (AP) — Authorities say an investigation of an illegal drug trafficking operation on Chicago’s West Side has led to federal charges against 24 purported gang members as well as the seizure of more than 30 guns and more than $1.3 million in cash.

The U.S. Department of Justice says Friday that “Operation Wicked Stones” revealed a drug trafficking operation in which two violent Chicago street gangs cooperated to distribute wholesale quantities of drugs and launder money.

Among those charged are two suspected gang members who were already charged in a murder-for-hire conspiracy in which one person was killed in 2018.