STORM LAKE, Iowa (AP) – A two-year investigation conducted by western Iowa police has yielded the arrests of 17 people on drug-related charges. The Storm Lake Police Department said Monday that the expansive drug sweep is aimed at stemming the sale of methamphetamine, heroin, cocaine, ecstasy and marijuana. Police began making arrests Thursday, seizing drugs and money throughout the weekend.

The Sioux City Journal reports that those arrested face conspiracy to manufacture and delivery charges involving methamphetamine, heroin and marijuana. Eleven were arrested on felony charges and six on serious misdemeanor charges. Police say the arrests are ongoing as they continue to locate more people linked to their investigation.