Violence spread across multiple Mexican states Sunday after the military killed Nemesio Oseguera, known as “El Mencho,” leader of the Jalisco New Generation Cartel (CJNG), during an operation in Tapalpa, Jalisco. Authorities reported that suspected cartel members set cars and businesses ablaze, erected highway blockades, and exchanged sporadic gunfire in what officials described as retaliation for the cartel chief’s death.

In the Pacific resort city of Puerto Vallarta, tourists recorded thick plumes of smoke rising over the coastline as fires burned. Several airlines, including Air Canada, United Airlines, and Aeromexico, canceled flights to the area. Local authorities advised residents and visitors to remain indoors, while public transit services were suspended in parts of Jalisco. A trucking industry association urged drivers to seek safe routes or return to depots until conditions stabilized.

Officials in the state of Guanajuato reported 55 incidents across 23 municipalities, resulting in 18 arrests. Authorities later said the situation was under control by evening. In Jalisco, gunmen reportedly attacked a military police base, further escalating tensions.

A member of the CJNG told Reuters the attacks were carried out in revenge for Oseguera’s killing and warned of additional violence as rival factions potentially move to seize control of the organization. Analysts note that previous high-profile cartel arrests or killings have often triggered similar outbreaks, either from loyalists seeking retribution or competing groups attempting to gain territory.

U.S. Deputy Secretary of State Christopher Landau expressed concern over the unrest in a social media post, stating that violent reprisals were not unexpected but emphasized the importance of maintaining resolve against criminal organizations. Mexican President Claudia Sheinbaum acknowledged the disturbances but said most of the country was functioning normally.

Authorities have not reported casualties beyond those killed during the initial military operation.