What was supposed to be an empty building used only for storage was home to a black-market type of lab testing facility.

YourCentralValley.com reports that the discovery was made after a local code enforcement officer noticed this garden hose poking out a back wall of the building.

Public Health staff also observed blood, tissue and other bodily fluid samples and serums; and THOUSANDS of vials of unlabeled fluids and suspected biological material.

Additionally they found 900 genetically engineered mice, engineered to catch and carry COVID-19, living in "inhumane" conditions.

773 of the mice had to be euthanized, and officials found another 178 mice already dead.