The investigation began when authorities noticed irregular energy consumption patterns. Despite the warehouse showing no signs of business activity, the electrical grid was being heavily used, suggesting a fraudulent connection to power the illegal crop's ventilation and lighting systems.

Officers from Vilafranca and Sant Sadurní seized professional equipment, including high-intensity lamps, air filters, and processing machinery. The suspects, who had no prior criminal records, were brought before the duty court in Vilafranca del Penedès.