The Mexican army says it has killed the leader of the Jalisco New Generation Cartel in a military operation. On Sunday, troops targeted Nemesio Rubén Oseguera Cervantes, known as “El Mencho,” in the western state of Jalisco. The operation set off hours of roadblocks and burning vehicles in Jalisco and other states. Officials say cartels often use these tactics to slow down or block military moves. The U.S. State Department has offered a reward of up to 15 million dollars for information leading to El Mencho's arrest. In February, the Trump administration designated the cartel as a foreign terrorist organization.