# The 11-M Madrid train bombings were carried out by ETA and covered up by the state to swing the 2004 election

**Verdict: Contradicted.** A four-year investigation and the 2007 Audiencia Nacional trial established that the 11 March 2004 Madrid train bombings were carried out by a local Islamist cell, with no evidence of ETA involvement. The trial court rejected the ETA link outright, and the 'theory of the conspiracy' promoted by some media was examined point by point and dismissed.

Category: Government & Intelligence · Era: 2000s · First circulated: 2004 · Believed by: Promoted for years by parts of the Spanish media and political right; surveys in the mid-2000s recorded significant public doubt about the official account
URL: https://theconspiratory.com/theory/madrid-11m-eta-conspiracy

## Summary
The claim that the 11 March 2004 bombing of four Madrid commuter trains, which killed roughly 191 people that morning, was really the work of the Basque separatist group ETA rather than an Islamist cell, and that the incoming Socialist government, the police, or a hidden faction manipulated or destroyed evidence to hide the truth and tip the 14 March general election. A real Islamist mass-murder attack, a real and bitter political fight over who did it, and a real election upset sit underneath the story. The specific claim laid over them, that ETA did it and the state covered it up, was tested in court and in Parliament and did not survive.

## The claim
That the Madrid train bombings were not carried out by a jihadist cell inspired by al-Qaeda, as the courts found, but by ETA (alone or alongside others), and that the police, the judiciary, or the Socialist opposition falsified, planted, or suppressed evidence, chiefly the type of explosive used and an unexploded backpack bomb, in order to blame Islamists, discredit the governing People's Party, and hand victory to the Socialists in the election held three days later.

## Origin and timeline
- 2004-03-11: Ten bombs explode on four packed commuter trains in and around Madrid during the morning rush hour, killing about 191 people and wounding roughly 1,800, the deadliest terrorist attack in Spain's history.
- 2004-03-11: Within hours, the government of Prime Minister Jose Maria Aznar publicly attributes the attack to ETA. Interior Minister Angel Acebes tells reporters there is 'no doubt' ETA is responsible, a line the government maintains as the investigation begins.
- 2004-03-11: The same day, investigators recover a stolen Renault Kangoo van near the Alcala de Henares station containing detonators and an audiotape of Koranic verses, the first physical lead pointing away from ETA and toward an Islamist cell.
- 2004-03-12: In the early hours, an unexploded backpack bomb recovered from the trains is examined at a police station in Vallecas. It yields a mobile phone and SIM card that lead police to a Madrid phone shop and to the first arrests, and it later becomes the central object of the conspiracy theory.
- 2004-03-13: Arrests of several men of North African origin are announced, and a videotape claiming the attack in al-Qaeda's name is found. Protesters gather outside People's Party offices accusing the government of hiding the Islamist lead for electoral reasons.
- 2004-03-14: In the general election, the Socialists (PSOE) under Jose Luis Rodriguez Zapatero defeat the governing People's Party, reversing pre-attack polling. The result, and the government's ETA attribution, become permanently entangled in the dispute over the bombing.
- 2004-04-03: Cornered by police in a flat in the Madrid suburb of Leganes, seven cell members blow themselves up, killing a special-forces officer. The suicides strengthen the Islamist-cell account and remove the chance to question the plot's core members.
- 2004-04-23: El Mundo begins publishing articles questioning the unexploded Vallecas backpack as evidence, an opening move in what becomes a sustained 'theory of the conspiracy' pressed by parts of the right-wing press and commentators such as Luis del Pino and outlets including Libertad Digital and COPE.
- 2004-2005: A parliamentary commission of inquiry investigates the attack and its handling. Its work, concluded in 2005, supports the Islamist-cell finding and does not validate the ETA-plot narrative.
- 2007-10-31: After a months-long trial at the Audiencia Nacional, the court convicts 21 of 28 defendants, finding the bombings the work of a local jihadist cell and stating there is no proof pointing to ETA. It addresses and rejects the conspiracy claims one by one.

## The evidence, claim by claim
- Claim: The explosive proves ETA: early reports said the bombs used Titadyne, a dynamite associated with ETA, and the switch to another explosive shows the story was changed.
  Evidence: Initial confusion over the explosive type was corrected within the investigation. Analysis established the bombs used Goma-2 ECO, a Spanish commercial dynamite, not Titadyne. The court traced the explosives to a supply obtained through Asturian mining contacts by the cell, and convicted a former miner, Emilio Suarez Trashorras, of supplying them. The explosive links the attack to the jihadist cell, not to ETA.
- Claim: The unexploded backpack found in Vallecas was planted or manipulated evidence, faked to frame Islamists.
  Evidence: The Vallecas backpack was a genuine device recovered from the trains that failed to detonate. Its phone and SIM card produced the first real investigative breakthrough and the earliest arrests. The trial court examined the chain-of-custody and tampering allegations in detail and found them unsupported; it treated the backpack as authentic evidence, not a plant.
- Claim: The bombings were an ETA operation and the Islamist attribution was invented for political convenience.
  Evidence: The physical and testimonial record points consistently to a jihadist cell: the Kangoo van with detonators and Koranic recordings, a claim of responsibility, the arrested and convicted defendants, and seven core members who blew themselves up in Leganes weeks later. Judge Javier Gomez Bermudez's court stated plainly there was 'no proof that points to ETA,' and separate investigations found the cell was inspired by, but not directed or financed by, al-Qaeda's central network.
- Claim: The incoming Socialist government, or a police faction, orchestrated a cover-up to win the 14 March election.
  Evidence: The theory has the timeline backwards: the attack happened under the People's Party government, whose own ministers ran the initial ETA attribution; the Socialists were in opposition and did not control the police or investigation on 11-14 March. A 2004-2005 parliamentary commission and the 2007 trial both examined the handling of the case and produced no finding of a manufactured Islamist frame or an ETA cover-up.
- Claim: The court verdict left the real story open, because the alleged mastermind was acquitted.
  Evidence: The 2007 verdict acquitted some defendants, including Rabei Osman ('Mohamed the Egyptian'), on the specific charges against them after evidentiary challenges, and later appeals adjusted individual outcomes. None of that disturbed the core finding: that a jihadist cell carried out the bombings and that ETA was not involved. Acquittals of particular individuals are how a contested criminal trial works, not evidence of a hidden ETA plot.

## Why people believe it
- The government's own error seeded the doubt. Ministers spent the first days insisting ETA was responsible, so when the attribution flipped to an Islamist cell just before an election, many people reasonably felt they had been misled, and that raw sense of manipulation outlived the correction.
- The result was politically shattering. A governing party lost an election it expected to win, three days after a massacre, and both sides had a powerful motive to believe the version of events that made the other side look guilty. The theory offered the losing side a story in which it was cheated rather than rejected.
- The attack and the election were genuinely entangled, which makes 'the bombing changed the vote' feel like 'the bombing was staged to change the vote.' The first is a real, debated question about how a shock affects an electorate; the second is an unsupported leap to intent.
- Sustained media repetition gave the theory the texture of unfinished business. For years, opinion columns, radio, and a stream of 'unanswered questions' pieces kept a list of anomalies in circulation, and a long list of loose threads can feel like proof even after each thread is individually explained.
- The suicides at Leganes removed the cast. With the plot's core members dead by their own hand, there was no dramatic courtroom confession from the ringleaders, and that absence left a vacuum that a conspiracy narrative could fill with implication.

## Open questions
- How much the attack actually moved the 14 March vote, versus pre-existing anger over the Iraq war and the sense that the government had mishandled the aftermath, is a legitimate and still-debated question for political scientists. That debate is about voter behavior, not about who planted the bombs.
- The early hours produced real errors and contradictions, including the mistaken explosive identification and the government's premature ETA attribution. Explaining how those mistakes happened is a fair inquiry into crisis communication and policing; it does not require, or support, an ETA-cover-up conclusion.
- The precise degree of connection between the Madrid cell and al-Qaeda's central leadership remains a subject of expert discussion: investigators concluded the cell was inspired by al-Qaeda but acted without direct command or financing. That is a question about jihadist network structure, not about ETA.

## Sources
- 11-M: el engano de ETA y las mentiras que aun circulan sobre el atentado, Maldita.es (2020): https://maldita.es/malditahemeroteca/20200311/11m-eta-engano-mentiras/
- El atentado del 11-M, 20 anos despues: los datos clave de una de las mayores tragedias de la historia de Espana, Maldita.es (2024): https://maldita.es/malditobulo/20240310/atentado-11-M-20-anos-historia-espana-datos-claves/
- Spanish Court Delivers Verdicts In Madrid Bombings, NPR (2007): https://www.npr.org/2007/10/31/15800071/spanish-court-delivers-verdicts-in-madrid-bombings
- Madrid bomb suspects found guilty, Al Jazeera (2007): https://www.aljazeera.com/news/2007/10/31/madrid-bomb-suspects-found-guilty-3
- Deep divisions over Madrid verdict, The Christian Science Monitor (2007): https://www.csmonitor.com/2007/1101/p07s02-woeu.html
- Madrid bombing probe finds no al-Qaida link, NBC News (Associated Press) (2006): https://www.nbcnews.com/id/wbna11753547
- Madrid bombers acted alone, Al Jazeera (2006): https://www.aljazeera.com/news/2006/4/11/madrid-bombers-acted-alone
- Madrid train bombings of 2004, Encyclopaedia Britannica (2024): https://www.britannica.com/event/Madrid-train-bombings-of-2004
- Controversies about the 2004 Madrid train bombings, Wikipedia (2024): https://en.wikipedia.org/wiki/Controversies_about_the_2004_Madrid_train_bombings

Rated by The Conspiratory, a neutral, sourced encyclopedia of conspiracy theories. Full page: https://theconspiratory.com/theory/madrid-11m-eta-conspiracy