efe-epaBarcelona (Spain)

Plainclothes Spanish police officers on Thursday raided the regional parliament and headquarters buildings of Spain's prosperous northeastern Catalonia and seized documents in connection with an investigation into alleged corrupt dealings within a powerful pro-independence party.

Investigators are probing allegations that the governing center-right Catalan European Democrat Party (PDeCAT) illegally financed itself by taking commissions valued at three percent of the contracts it allocated to public entities.

Agents from Spain's national law enforcement agency accessed the PDeCAT's offices and the regional Parliament where they requested the handover of documents specifically related to the former head of Catalonia's executive, Germà Gordó, for his alleged role in the irregular financing of the party.

Known as the Democratic Convergence of Catalonia (CDC) until 2016, PDeCAT currently controls the regional government in a coalition with fellow separatists the Republican Left of Catalonia.

The so-called three percent case was launched three years ago and has led to several raids on party and business headquarters in Catalonia.

Sources close to the investigation told EFE that agents also seized documents from the Catalonian Department of Justice and the Center of Telecommunications and Information Technology.

Gordó is summoned to testify at Catalonia's Supreme Court of Justice on Monday for his alleged role as a mediator dealing with contracts between the CDC and businesses, for which he faces accusations of embezzlement.