 The Navy managed to confirm his death through fingerprint verification and photographs of his corpse before handing the body to the local authorities.Lazcano is the most powerful cartel leader to be killed since the start of Mexico's Drug War in 2006, according to Reuters.This death came just hours after the navy arrested a high-ranking Zeta member in Nuevo Laredo, Tamaulipas, Salvador Alfonso Martínez Escobedo.