Federal forces shut down a large synthetic drug laboratory on March 19 in the remote Las Tinajas area east of Mexicali, seizing chemicals and equipment from a facility capable of producing up to 3,000 kilograms of methamphetamine per month. The drug lab in Mexicali hills was empty at the time of the raid, and no arrests were made.
Tons of Chemicals Seized at Las Tinajas Site
Soldiers recovered roughly 2,500 kilograms of caustic soda, 700 liters of liquid methamphetamine, 400 liters of hydrochloric acid, and 3,000 kilograms of lead residue from the facility. Investigators also cataloged laboratory equipment including reactors and storage containers used in synthetic drug production.
The site, located in the arid hills southeast of the Mexicali urban center, was large enough to house about 20 workers at a time. Las Tinajas sits in a sparsely populated desert area along the mountain ridgeline that separates the Mexicali Valley from the Gulf of California coast, a terrain that makes clandestine operations difficult to detect from ground level.
Mexicali’s Role in Border Drug Production
Mexicali, the capital of Baja California, sits directly across from Calexico, California, making it one of the busiest land border crossings in the western hemisphere. The proximity to U.S. ports of entry has long made the surrounding desert a target for cartel operations focused on methamphetamine manufacturing and smuggling.
The bust fits a broader pattern of federal military operations against clandestine drug labs across northern Mexico. In February 2024, the Mexican Navy dismantled what it called the largest meth “mega-laboratory” of that administration in neighboring Sonora state, seizing 4.13 metric tons of methamphetamine. In January 2026, authorities raided 11 methamphetamine production sites in Sonora and seized 25,000 liters of chemicals at a lab in Guerrero.
Baja California has seen fewer mega-lab busts than Sinaloa or Sonora, but smaller operations regularly surface in remote terrain near the border. Mexican armed forces have increasingly relied on aerial surveillance and drone technology to locate hidden facilities in desert and mountain areas where road access is limited.
Federal investigators said the case remains open and that they are working to identify the criminal organization behind the Las Tinajas facility. No timeline for potential arrests has been announced, according to La Jornada Baja California.