Mayhem Rocks Mexico After Most-Wanted Cartel Boss Is Killed

The Mexican government said it killed the nation's most wanted cartel boss on Sunday, setting off a wave of fires and violence across the country as cartel operatives sought to exact revenge in an unsettling show of force.

Nemesio Oseguera Cervantes, known as "El Mencho," was the longtime leader of one of Mexico's most powerful cartels, the Jalisco New Generation Cartel, and was widely regarded as one of the country's most violent criminal figures. He presided over a criminal enterprise that has expanded rapidly over the past decade, producing and selling drugs, extorting local businesses and terrorizing communities across the country.