Six Catalan MPs are giving evidence before a Spanish judge over claims that they ignored Constitutional Court orders and allowed an independence vote in Catalonia’s regional parliament.

The parliament’s speaker, Carme Forcadell, and five other members of the governing body face possible charges of rebellion, sedition and embezzlement, punishable by decades in jail.

A Supreme Court judge is set to decide after questioning them if any preventive measures, including possible jail, are to be applied while the investigation continues.

Madrid took the unprecedented step of seizing control of the wealthy region shortly after the October 27 independence declaration, the first time in four decades of democratic rule that one of Spain’s 17 regions has temporarily lost its self-government.

Spain removed the regional government, dissolved the parliament and called a new regional election for December 21.

The independence declaration in the Catalan parliament was boycotted by most opposition legislators but held despite previous court rulings. It was passed by 70 votes to 10 in the 135-seat legislative body. Former Catalan regional president Carles Puigdemont and four of his dismissed cabinet members fled to Brussels, where they are fighting Spanish arrest and extradition orders.

They are also trying to rally EU support for their cause. No country has sided with them so far, but their presence in Belgium is sowing divisions among politicians.