A tip about drug lord Nemesio Oseguera's romantic liaisons led Mexican authorities to the cartel leader's hideout in a small town of Jalisco state where he was killed, Mexican authorities said on Monday in the first account of the ambush that spawned violence across much of Mexico. Oseguera, Mexico's most-wanted cartel leader, was the mastermind of the powerful Jalisco New Generation Cartel, rival to the also infamous Sinaloa Cartel. The U.S. provided intelligence to help pinpoint the exact location of the compound in the town of Tapalpa where Mexican authorities found the cartel boss, but Mexican officials underscored that they spearheaded the operation. Garcia added that authorities were closely monitoring for a reaction or restructuring within the cartel that could unleash further violence. Mexican conglomerate Femsa, which operates Mexico's ubiquitous Oxxo convenience stores, reported over 200 incidents at its stores and gas stations.