Lorraine Williamson
The investigation into the Adamuz rail disaster has taken another turn after Adif’s president publicly challenged one of the Guardia Civil’s most important conclusions about what caused the crash.
Luis Pedro Marco de la Peña said on Monday that there is still no certain proof that a break in the track or in a weld caused the January disaster near Adamuz, despite the Guardia Civil’s recent report pointing in that direction. His intervention pushes back against a theory that had begun to harden in public coverage of one of Spain’s deadliest rail accidents in years.
The crash happened on 18 January 2026 near Adamuz, in Córdoba province, when an Iryo train derailed and was then struck by an Alvia service, leaving 46 people dead and more than a hundred injured. Since then, the technical, judicial, and political fallout has continued to grow.
What Adif is now saying
According to El País, Marco de la Peña argued that the voltage drop recorded in the track circuit on the night before the crash cannot by itself prove that the rail or weld had broken. He said that the system is designed to indicate track occupancy, not to certify a fracture in the line, and warned against treating that electrical anomaly as definitive evidence of the cause.
Cadena SER reported the same broad line from Adif, saying the infrastructure manager believes the Guardia Civil may have misunderstood a technical signal and that there is currently no technology capable of confirming a rail break in real time through that system alone. Adif’s position is that more expert reports are still needed before such a conclusion can be stated with certainty.
That is a significant shift in tone from the narrative that gathered pace last week, when reporting on the Guardia Civil investigation suggested the line had broken around 22 hours before the crash without triggering a proper alert.
Why the disagreement matters
This is not just a technical quarrel between investigators. It goes to the heart of responsibility.
If the Guardia Civil is right, the focus sharpens on whether the break should have been detected earlier and whether maintenance, inspection, or monitoring failures played a role. If Adif is right, the investigation remains much more open, with alternative causes still on the table and no final answer yet on whether the break was in the rail, a weld, or something else entirely.
El País says Marco de la Peña also rejected suggestions of negligence or cover-up, defended Adif’s handling of the aftermath, and said the infrastructure manager acted transparently while judicial and technical investigations continued. He also pointed to pending expert assessments and to the possibility of other contributory factors, including loose material on the line.
A case that is still widening
The Adamuz investigation has already become far broader than a single-cause crash inquiry.
In recent days, attention has also turned to the company that inspected the welds in the area, after questions were raised over staffing experience and inspection records. That company, Redalsa, has denied irregularities and insists its personnel met the required standards.
Separately, victims’ families have been demanding answers not only about the technical cause of the crash but also about the emergency response on the night, arguing that serious coordination failures worsened the chaos after the derailment and collision.
All of that means Monday’s intervention from Adif is unlikely to calm the debate. If anything, it underlines how contested the case still is.
Judge tightens control over Adamuz crash site as victims criticise Adif silence
The investigation continues
For now, the key point is that the rail-break theory remains deeply important but no longer looks as settled as it did a few days ago.
The Guardia Civil report pushed one explanation strongly into view. Adif is now trying to pull the investigation back towards a more cautious position, insisting that the available evidence does not yet prove that a fracture in the track was the confirmed cause. Until the expert reports are completed and the court process moves further on, the Adamuz crash will remain not only a tragedy but also a battle over what, exactly, went wrong.