Catalan ex-leader Carles Puigdemont has called for separatist parties to unite in upcoming regional elections to continue a push for independence.

The snap poll was called by Spain after the Catalan parliament declared independence and Madrid reacted by imposing direct rule.

Mr Puigdemont's appeal came a day after a Spanish judge issued an EU warrant for his arrest - he is in Belgium.

Despite being sought by the courts, he says he is ready to run in the poll.