A high-speed train crash in southern Spain, the worst in over a decade, has been a devastating tragedy for the country, with the loss of at least 42 lives. Amid the grief, many are asking what could have caused such a failure on one of Europe's most admired rail systems.

The CIAF rail investigatory commission has started analysing why a train travelling north from Málaga was derailed on a straight section of the route, causing it to collide with an oncoming train, which was also derailed. The Spanish government has described the accident as 'extremely strange'.

Three bodies already located in the wreckage were recovered on Tuesday afternoon, and a 42nd victim was also found at the crash site near Adamuz. The shock felt in this sleepy town has been compounded by confusion at how a rail route that ran efficiently for so long suddenly failed.

After its inauguration in 1992, Spain's high-speed rail, or AVE, network was seen as a symbol of the country's modernisation. Built with EU funds, it provided a state-of-the-art transport system that was fast, efficient and safe. A derailment near Santiago de Compostela in 2013 that killed 80 people was not part of the AVE network, although that train was travelling at high speed. Sunday's collision, however, took place on the oldest AVE route, that which connects Madrid with Andalusia.

Several officials, including the president of Renfe, the national rail operator, Álvaro Fernández Heredia, said that human error was almost certainly not the cause of the accident, given that neither train was travelling at an excessive speed. Interior Minister Fernando Grande-Marlaska insisted that sabotage was not a possible cause.

Investigators are examining the train that derailed, which was owned by Italian firm Iryo and manufactured in 2022. Transport Minister Óscar Puente stated that carriage number six of the train would be scrutinized closely, as it was the first to derail and could provide significant clues to the incident.

Further analysis is directed at the section of track where the derailment occurred, as a broken section has been found, raising speculation about its involvement. However, officials emphasize that this damage could have resulted from the force of the collision rather than being a pre-existing issue.

Concerns have also been raised regarding the state of the rail network. Recent revelations indicate that Adif, the rail infrastructure administrator, flagged several technical issues on the line, primarily concerning signalling.

The investigation is critical, with ramifications for the future safety and reliability of Spain's high-speed rail network. Prime Minister Pedro Sánchez has assured transparency in the findings, acknowledging the burden of responsibility to ensure the safety of travelers in the future.