Experts investigating Sunday’s catastrophic derailment of a high-speed train in southern Spain have identified a broken joint in the railway tracks as a critical factor in an accident that killed at least 39 people, according to a source briefed on the initial findings. The revelations, reported by Reuters, point to a structural fault that may have developed over time, raising urgent questions about rail inspections and infrastructure safety on one of the country’s modernized lines.
The crash occurred near the town of Adamuz in the province of Cordoba, around 360 kilometers south of Madrid. Several carriages of a high-speed passenger train derailed and smashed into an oncoming train, forcing it off the tracks and down an embankment. The violent impact marked one of the most severe train disasters in Europe in modern times and prompted a swift response from emergency services and senior government officials.
According to the source cited by Reuters, technicians examining the site found wear and damage on a joint between two rail sections, known as a fishplate. The defect created a gap in the rails that gradually widened as trains continued to pass over it. Investigators believe the fault had existed for some time and are increasingly confident it is central to understanding the precise cause of the derailment. The source, who requested anonymity due to the sensitivity of the investigation, said the condition of the joint strongly suggests a mechanical failure rather than an operational mistake.
Initial inspections indicate that the first carriages of the train, operated by Spanish private rail company Iryo, passed over the gap without incident. However, the eighth and final carriage derailed, pulling the seventh and sixth carriages off the tracks with it. The derailing train then collided with an oncoming service, dramatically compounding the scale of the disaster. A photograph showing the rail gap, later released in a handout image by Spain’s Guardia Civil, has been marked and documented by forensic inspectors as part of the ongoing inquiry.
Spain’s Commission of Investigation of Rail Accidents, known as CIAF, has been tasked with leading the official probe but did not immediately respond to requests for comment. Neither Adif, the state-owned rail infrastructure operator, nor the Spanish transport ministry, which oversees the commission, provided immediate responses. The lack of early official statements has intensified public attention on the findings emerging from sources close to the investigation, including those reported by Reuters.
Renfe president Álvaro Fernández Heredia, whose company operates the second train involved in the collision, told Cadena Ser radio that it was too early to draw firm conclusions. He described the circumstances surrounding the crash as unusual and said that human error had been “practically ruled out,” reinforcing the focus on infrastructure and mechanical causes rather than driver actions.
The incident has also drawn scrutiny to the condition of both the train and the tracks. Transport Minister Óscar Puente said the Iryo train was less than four years old and that the railway line had undergone a complete renovation as recently as May. According to the source speaking to Reuters, the train’s manufacturer, Hitachi Rail, carried out a routine inspection on January 15 and found no anomalies. The train involved was a Frecciarossa 1000, the same high-speed model widely used on Italy’s rail network.
Political leaders moved quickly to the crash site as the scale of the tragedy became clear. Prime Minister Pedro Sánchez and Transport Minister Puente visited the area on Monday morning, with Sánchez cancelling his planned trip to the World Economic Forum in Davos, Switzerland. Their presence underscored the national significance of the disaster and the pressure on authorities to deliver a transparent and credible investigation.
As investigators continue to analyze the damaged rails and wrecked carriages, the discovery of a long-worn joint has become a focal point of the inquiry. The findings reported by Reuters suggest that attention will increasingly turn to maintenance regimes and oversight of critical rail components, as Spain confronts the human cost of a failure hidden in plain sight along its high-speed tracks.
