A train that was heading from Veracruz to Puebla was separated as it advanced and its brakes were manipulated, 39 cars and 4 locomotives derailed uncontrollably along 10 kilometers until they hit another train that was about to leave Orizaba course to the Valley of Mexico.

TÜV Rheinland carried out the independent derailment evaluation service with the objective of verifying the documentary information and the graphic of recent facts to determine possible causes for the investigation of elements and participants in said event.