The near four-hour session of the ‘Official Secrets Commission’ was held behind closed doors by MPs in the Spanish Congress in Madrid on Thursday, with the spokespersons of all the country’s main political parties present, and in which four pro-independence parties were also present: the Basque EH Bildu, and the Catalan parties ERC, JxCAT and the CUP.

MPs pledged not to reveal any secrets and had to deposit their mobile phones in lockers before entering the commission.