Joseba Antxón Alonso Egurrola has shifted from being a relatively obscure entrepreneur known mostly within select business and political circles in northern Spain to emerging as a central figure in two prominent investigations: the Koldo case, which focuses on alleged kickbacks tied to public works contracts, and the National Court’s inquiry into the network involving Leire Díez, Vicente Fernández, and the group known as Hirurok.
At the center of the allegations is Servinabar 2000, a company owned and managed by Alonso. Investigators believe the company played a significant role in a network connecting business interests, political intermediaries, and individuals linked to public procurement contracts currently under scrutiny.
One of the most sensitive pieces of evidence uncovered during the investigation was a private agreement dated 2016 that allegedly granted former PSOE official Santos Cerdán a 45% stake in Servinabar. Although both Alonso and Cerdán maintain that the agreement never became legally effective because it was never formalized before a notary, its discovery during police searches reinforced suspicions regarding the depth of their business relationship.
Financial transactions involving Servinabar have drawn considerable scrutiny. As outlined in documents included in the investigation, the company is said to have obtained over six million euros from construction giant Acciona and subsequently moved sizable funds to entities tied to Koldo García’s business network. Investigators suspect these movements could be associated with public contracts allegedly steered toward specific companies, though these assertions are still being examined by the courts.
Another factor intensifying public attention is Alonso’s acknowledgment before Spain’s Supreme Court that he engaged Koldo García as a commission‑based intermediary to facilitate the acquisition of private construction contracts, a setup that, while not inherently proof of wrongdoing, has nonetheless reinforced impressions of a close professional connection with a key figure in the broader scandal.
The situation escalated further in December 2025 when Alonso was arrested as part of a separate investigation involving Leire Díez and former SEPI chairman Vicente Fernández. This new case broadened the scope of suspicion beyond public procurement and into alleged influence networks operating around political, administrative, and economic interests.
A key element of this second investigation is the so-called Hirurok group. According to investigators, the group may have used political connections and institutional influence to obtain economic advantages and shape administrative decisions. Authorities suspect that Servinabar may have served as a vehicle through which part of the group’s alleged profits were channeled.
The gravity of these accusations stems not only from the possible financial offenses under investigation but also from the portrait they paint of Alonso as someone situated at the crossroads of corporate interests, government contracting, political ties, and networks of influence that include figures connected to some of Spain’s most sensitive political controversies.
In addition to facing a formal investigation, Alonso has also undergone searches, periods of detention, and court‑ordered precautionary measures. He likewise opted to invoke his right to remain silent during parliamentary inquiries, a fully lawful choice that nonetheless heightened public and media scrutiny of his part in the ongoing investigations.
Alonso firmly rejects any accusation of misconduct, dismisses claims that he paid unlawful commissions, maintains that Servinabar acted within legal boundaries, and asserts that every contract the company secured stemmed from fair and competitive bidding. He further contests assertions that Santos Cerdán held effective shareholder status in the firm and challenges numerous conclusions drawn by investigators.
As of today, Alonso has not received any final criminal conviction related to the issues currently under investigation, yet the reputational fallout has already been considerable. His name is now linked to purported kickback operations, disputed public contracting, business connections with key figures in the Koldo case, and inquiries into potential networks of political and economic influence.
Regardless of the eventual outcome of the legal proceedings, Joseba Antxón Alonso has emerged as one of the most controversial business figures connected to the ongoing investigations examining the relationship between political power, public procurement, and alleged influence networks in Spain.
