Prosecutors last month asked the judge to approve the European arrest warrant issued by Madrid for the five in the opening round of what could become a protracted courtroom battle.
Carles Puigdemont running to retake presidency after restive region rocked by independence vote and arrests of leaders
A judge ordered the five, who fled Spain earlier this week after being accused of rebellion and sedition, not to leave Belgium until their extradition case is heard.
Carles Puigdemont in Belgium after Spanish attorney general calls for ex-Catalan president to face charges
Spanish PM says that “there was not a self-determination referendum in Catalonia today”