Spanish Police Search Ruling Socialist Party’s Headquarters Amid Corruption Investigation

Spanish Prime Minister Pedro Sanchez says, 'If there are new episodes of improper behavior, we will act with the same firmness we always have.'
Published: 5/27/2026, 3:19:11 PM EDT
Spanish Police Search Ruling Socialist Party’s Headquarters Amid Corruption Investigation
Journalists gather outside the headquarters of Spain's ruling Socialist Party as police search the building, in Madrid on May 27, 2026. (Bernat Armangue/AP)

Spanish police began a search of the ruling Socialist Party’s headquarters in Madrid on May 27 as part of an investigation into alleged wrongdoing by a member of the party.

The Guardia Civilone of two national law enforcement agencies in Spain—said that the search was confined to an investigation into allegations against Socialist Party member Leire Díez and others.

The investigation, being led by National Court judge Santiago Pedraz, revolves around allegations that Díez, a former journalist and “fixer,” was trying to discredit an officer in the Guardia Civil’s anti-corruption unit.

The May 27 raid is believed to be an attempt to discover whether there is evidence that she received payments from the Socialist Party, which is formally known as PSOE.

Diez, who has left the party, has denied any wrongdoing, while the party says her actions were of her own volition.

It was not immediately clear whether Diez had a legal representative who could comment on her behalf.

A statement issued by the National Court on May 27 said that Pedraz ordered the Guardia Civil to “confiscate diverse documentation and electronic archives in an investigation of a ring designed to destabilize judicial processes that were affecting the ruling party.”

Pedraz said he was also investigating a former Socialist politician, Santos Cerdán, as well as a former member of the regional government of Andalusia, a police officer, a business owner, and two lawyers on suspicion of bribery, making false testimony, forging commercial documents, influence peddling, and corruption.

Last year, Cerdán and former transport minister José Luis Ábalos were placed under investigation amid allegations they received kickbacks during the COVID-19 pandemic. They have denied the allegations.

The raid is the latest blow to the reputation of Spanish Prime Minister Pedro Sánchez and his party, which has been embroiled in a number of corruption scandals in recent years.

Sánchez has headed the Spanish government since 2019, and retained power in 2023 despite the Socialists coming second in that year’s election. His minority government depends on the support of a junior coalition partner, the left-wing Sumar party.

Sánchez: ‘We Respect the Justice System’

“We respect the justice system, we will collaborate with the courts, and there is the commitment in the Socialist Party that if there are new episodes of improper behavior, we will act with the same firmness we always have,” Sánchez said at a news conference in Rome, where he is visiting Pope Leo XIV.

Sánchez accepted the “seriousness” of the raid but said corruption allegations “do nothing to stain the work of this government that, with progressive parties, is working for a social and economic transformation.”

His wife, Begoña Gomez, and brother David are also being investigated over allegations of influence peddling, which they deny.

The prime minister has called the investigations into his family a “smear campaign.”

Last week, a court said it was investigating former Socialist Prime Minister José Luis Rodríguez Zapatero in connection with airline Plus Ultra, which received a government bailout in 2021.

Zapatero—who was prime minister from 2004 to 2011—has denied any wrongdoing, saying on May 19, “I want to reaffirm that all my public and private activity has always been carried out ​with absolute respect for the law.”
Spanish Prime Minister Pedro Sanchez is welcomed by Archbishop Petar Rajic as he arrives at the St. Damasus courtyard ahead of a private audience with Pope Leo XIV at the Vatican, on May 27, 2026. (Alessandra Tarantino/AP)
In June 2025, U.S. President Donald Trump accused Spain of wanting a “free ride” after Sánchez was the only leader of a NATO member country to refuse to agree to a 5 percent of GDP defense spending target at the alliance’s summit in The Hague.

“Spain is the only country, out of all of the countries, that refuses to pay; they want a little bit of a free ride, but they have to pay it back to us on trade because I’m not going to let that happen,” Trump said. “It’s unfair.”

Sánchez responded shortly after that, saying, “The Spanish Armed Forces, the Ministry of Defense, tell us that the capabilities agreed upon 20 days ago, on June 5, with NATO, represent 2.1 percent of our gross domestic product, and that is what we’re going to do. And that commitment is absolutely compatible with the commitment to sustain and strengthen the welfare state in Spain.”
In October 2025, Trump threatened to impose trade tariffs on Spain over its failure to meet the 5 percent target.
Last month, Trump said he was considering withdrawing U.S. troops from Spain and Italy, citing their lack of support throughout the U.S.–Israeli war with Iran.
 The Associated Press contributed to this report.