Cleanup operations for a hazardous chemical spill in northern Mexico have been complicated by heavy rainfall, according to reports from the scene.
The weather conditions are slowing containment efforts for approximately 59,000 liters of sodium hydrosulfide, a highly toxic substance, following a weekend train derailment in the state of Sonora.
The incident has prompted an investigation by Mexico's Federal Attorney General's Office (FGR).
Authorities declared a crisis zone in the affected area as emergency teams work to manage the environmental hazard.
The derailment involved a freight train operated by Ferromex, the logistics subsidiary of Grupo Mexico.
Sodium hydrosulfide poses significant health and environmental risks, particularly when mixed with water or exposed to air, which can release hydrogen sulfide gas.