On Thursday, Spain's central government said that it will move to suspend Catalonia's autonomy after the regional leader failed to drop a bid for independence.
In a statement on Spain's government website on Thursday morning, Madrid said that the Catalan leader Carles Puigdemont had refused to comply with a request to formally declare whether the region had declared independence.
Consequently, it said it would "continue with the procedures provided for in Article 155 of the Constitution to restore legality in the self-government of Catalonia." Meaning, the government is set to meet on Saturday to propose measures to strip Catalonia of some powers and officially trigger Article 155 of the Constitution.
Article 155 has never been invoked before but as tensions have grown between Spain and Catalonia a constitutional crisis has become more of a possibility. Article 155's effects would not be felt for several days due to it requiring approval from the upper house of parliament, the Senate.