(Reuters) – Catalonia will move on Monday to declare independence from Spain after holding a banned referendum, pushing the European Union nation towards a rupture that threatens the foundations of its young democracy.

Catalan President Carles Puigdemont said he favoured mediation to find a way out of the crisis but that Spain’s central government had rejected this. Prime Minister Mariano Rajoy’s government responded by calling on Catalonia to “return to the path of law” first before any negotiations.

Mireia Boya, a Catalan lawmaker from the pro-independence Popular Unity Candidacy (CUP) party, said a declaration of independence would follow a parliamentary session on Monday to evaluate the results of the Oct. 1 vote to break away.

“We know that there may be disbarments, arrests … But we are prepared, and in no case will it be stopped,” she said on Twitter.