European prosecutors have opened a fresh investigation into suspected fraud involving EU money spent on Spain's busiest high-speed corridor, the Madrid–Seville AVE line. The focus this time: the delayed modernisation of the route's safety, signalling and communications systems.
The European Public Prosecutor's Office (EPPO) confirmed on Friday it was gathering records from rail infrastructure manager Adif, the State Railway Safety Agency and Spain's Court of Auditors, with the Guardia Civil's UCO unit assisting. It's the second European probe into funding on this route, and the timing is grim. Two fatal disasters have hit the line within nine months — a collision near Urda, south of Madrid, on 28 October killed 69 people when a Renfe train ran into a stationary Iryo service, and an earlier crash at Adamuz, in Córdoba province, left 46 dead. Combined toll: 115.
The Urda collision has put the spotlight on the line's aging train protection system, LZB, which broke down due to a communications failure before the crash. Its replacement with the European-standard ERTMS system is overdue. Adif awarded that upgrade contract in 2021 to France's Thales for €93.83 million, covering signalling, traffic control and telecoms. Under the original schedule, the changeover should have been finished at the start of this year. It wasn't.
The new inquiry sits apart from an earlier EPPO case opened in March after the Adamuz crash, which examined €111 million in EU maintenance funding for the route, and from the Spanish courts investigating the crashes themselves. Prosecutors haven't said which contracts or offences are under examination. Adding weight to the scrutiny: a 2025 Court of Auditors report criticised Adif's contract scoring as lacking transparency, warning that decisions risked becoming "unjustified and arbitrary" — though no link has been established to the current case.
For travellers, the practical picture is unchanged for now: Madrid–Seville remains one of Europe's great rail journeys, and the Spanish judicial inquiries concern what went wrong, not whether the line is running. Trains are operating, and any service disruption or safety measure would come from Adif and Renfe announcements rather than these investigations. But if you're booking AVE travel in the coming months, it's worth keeping an eye on official updates — and knowing that a long-awaited signalling upgrade on the route is now firmly under the microscope.
Reporting by Spain in English.
