Cartel violence exploded across more than ten of Mexico’s 32 states on Sunday after the government of Mexico confirmed the death of Cartel Jalisco New Generation (CJNG) leader Nemesio “El Mencho” Oseguera, triggering roadblocks, gunfire, and burning vehicle attacks from the Pacific Coast to the Texas border.

The unrest forced airports to halt operations, highways to shut down, and U.S. officials to warn American citizens to shelter-in-place as CJNG gunmen launched coordinated retaliatory strikes nationwide.

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The violence erupted shortly after rumors of El Mencho’s death began to circulate early Sunday morning when cartel gunmen associated with the CJNG began constructing road blockades using semi-tractor trailers and civilian vehicles, some lit on fire, to impede traffic along major roadways in four key states controlled by the cartel.