SEMAR Dismantles 'Mayito Flaco' Narco-Lab in Culiacán — Industrial Reactors, 200L of Chemicals, 2,500 Marijuana Plants Destroyed

Mexico's Navy (SEMAR) located and dismantled a clandestine narco-laboratory in Culiacán, Sinaloa on May 8, 2026, attributed directly to Ismael 'Mayito Flaco' Zambada Sicairos — the son of El Mayo and the emerging leader of the La Mayiza faction positioned to lead a reconstituted Sinaloa Cartel. The lab contained industrial-scale production equipment including centrifuges and chemical reactors, along with approximately 200 liters and 20 kilograms of chemical substances used in synthetic drug manufacturing. Alongside the laboratory, SEMAR eradicated an approximately 100-square-meter marijuana plantation containing roughly 2,500 plants at 1.60 meters height, all of which were incinerated on site. No armed confrontation was reported during the raid. The operation is strategically significant because Mayito Flaco — now managing the La Mayiza faction's 90% territorial dominance in Sinaloa — is widely assessed as the most likely next leader of the reconstituted Sinaloa Cartel. SEMAR's ability to locate and destroy a lab attributed specifically to him, in Culiacán itself, demonstrates that federal intelligence operations are penetrating La Mayiza's urban infrastructure despite the faction's battlefield superiority. The Zeta Tijuana combined the story with El Mayo's sentencing delay, noting the dual pressure on the Zambada family network from both the US legal system and Mexican security operations on the same day. Diario MX and Vanguardia confirmed the lab details on May 8.