"Operation Over the Top" lasted more than a year, and included last month's seizure of 80 kilograms of heroin from a home in Hanover Park, the release stated. Authorities also raided and shut down a heroin "stash house" in Bensenville, and removed another 85 kilograms of heroin and cocaine from warehouses in St. Charles and Sugar Grove, and from a vacant lot on Chicago's west side, the release stated.