A cargo truck ploughed into a line of stationary vehicles and emergency personnel attending a prior accident on the Guadalajara–Tepic toll road in western Mexico on Sunday, causing a multi-vehicle fire and leaving a provisional death toll that authorities have yet to reconcile. According to Jalisco’s civil protection agency, at least nine people were killed, including two children, while the security secretariat of neighbouring Nayarit state reported ten dead. A delegate of Mexico’s national emergency commission, Josh Ojeda, said the number of fatalities had risen to 16, a figure that remained unconfirmed by other official sources late on Sunday.

The crash occurred near the Plan de Barrancas toll plaza in the municipality of Magdalena, Jalisco, close to the border with Nayarit. Emergency crews were already at the scene of a collision between two cargo trucks when a third tractor-trailer, reportedly suffering a brake failure, struck the vehicles and responders. The impact triggered a fire that consumed two trucks and three private cars, according to the Nayarit security secretariat. A patrol vehicle belonging to the National Guard was also damaged. Mexican army and National Guard statements cited a brake system failure as the likely cause, though a full investigation is under way.

Among the injured, two National Guard officers were listed in serious condition and taken to a hospital in Guadalajara. Jalisco’s civil protection agency said four US citizens sustained minor injuries and were transported by private ambulance to a local hospital. Local media reported that the driver of the truck was detained by the National Guard with the assistance of toll booth personnel. The highway remained closed for several hours while forensic teams and prosecutors processed the scene, with traffic later partially reopened in the direction of Guadalajara.

Mexican officials have not yet released the identities of the deceased, and the final toll may change as rescue and recovery operations continue. Fatal collisions involving cargo trucks are a recurrent problem on Mexican highways, with poor vehicle maintenance and driver fatigue often cited as contributing factors, though authorities have cautioned against drawing conclusions before the investigation is complete.