Federal, state and local officials say a series of arrests in recent weeks has put a dent in the local drug trade.
A total of 18 people, including six from Springfield, are facing charges in connection with cocaine trafficking across Central Illinois, particularly in Springfield and Decatur.
Authorities say 30-year-old Eddy Ramirez of Paxton is the ringleader.
In the course of the investigation, authorities have seized 10 kilos of cocaine, three kilos of heroin, and nearly $900,000 in cash.