After a monthlong undercover investigation, the McHenry County sheriff's office Narcotics Task Force has arrested and charged two men with selling illegal drugs in the Fox River Grove area and has arrest warrants out for two others, officials said.

The investigation was launched after the task force received numerous complaints from local high school resource officers about drug activity by a resident on the 500 block of Opatrny Drive in Fox River Grove, according to a sheriff's office news release issued Thursday afternoon.

The McHenry County SWAT team searched the house and seized around $17,470 worth of illegal drugs on Wednesday; the haul included 641 grams of cannabis, 354 Xanax pills, 51 ecstasy pills, 6 hydrocodone pills, 3 Valium pills, 1 gram of cocaine, 4 digital drug scales, packaging materials, multiple items of drug paraphernalia and $2,323 in cash, according to the release.

Kosma M Harasimowicz, 21, and Austin J. Strong, 21, were taken into custody; arrest warrants have been issued for David J. Fidowicz, 20, and Javier G. Nunez-Garcia, 21. All are from Fox River Grove.

Harasimowicz was charged with three counts of delivering illegal drugs and five counts of possessing illegal drugs. His bond was set at $100,000, and he will be in court next on Nov. 16. Strong was charged with one count of delivering cannabis and three counts of possessing illegal drugs. His bond was set at $15,000, and he will be in court next on Nov. 14. Fidowicz is charged with two counts of delivering drugs and three counts of possession. His bond was set at $100,000. Nunez-Garcia was charged with two counts of delivering drugs and two counts of possessing drugs. His bond was set at $75,000.