Former Spanish Prime Minister José Luis Rodríguez Zapatero is under investigation by Spanish authorities for allegedly leading an influence-peddling ring, according to judicial sources.

Zapatero, who served as Spain's Prime Minister from 2004 to 2011, is being investigated in connection with a network suspected of using political influence for improper gain. The investigation marks a significant development involving one of Spain's most prominent political figures from the recent democratic era.

The Socialist leader governed Spain during a critical period that included the global financial crisis and the beginning of Spain's economic downturn. His administration implemented various austerity measures and social reforms during his tenure.

Details about the specific allegations and the scope of the investigation have not been fully disclosed by authorities. Spanish judicial proceedings involving high-profile political figures often develop over extended periods before reaching conclusions.

Zapatero has not yet publicly responded to the investigation. The case adds to ongoing scrutiny of political figures in Spain, where several corruption investigations involving former officials have gained prominence in recent years.