(CBS) — Police say they’ve broken up a prostitution “house of horrors” that did business in Schiller Park and on Chicago’s west side.

Keith Williams, 52, allegedly served his prostitutes crack and heroin twice a day on a silver platter, but prosecutors say he was one brutal master, WBBM Newsradio’s Bob Roberts reports.

He allegedly would beat women for rule infractions, real or imagined, with his fists and feet. He would choke them, handcuff them and lock them away for days at a time without food or drugs, making them ill, authorities said Friday.

Cook County State’s Attorney Anita Alvarez says the multi-agency investigation, dating back to May, showed a pattern of preying on women who were down-and-out. Some admitted they went to work for Williams despite a violent reputation.

“What started out as a standard investigation into drugs and prostitution quickly evolved into something much more complex,” Alvarez said in a news release.  “As it turned out, Keith Williams was the Chief Operating Officer of a sex trafficking house of horrors, providing the sexual services of drug addicted women to countless numbers of paying customers and collecting all of the significant cash profits for himself and his associates.”

Bond is set at $650,00 dollars for Williams and at $350,000 each for driver Roman Kurek, 49, and prostitute Sylvia Topolewski, 37.