Spain’s top court said on Saturday that Catalonia’s fugitive ex-president must return to the country and be present in the regional parliament to receive the authority to form a new government.

The Constitutional Court ruled that a session of Catalonia’s parliament scheduled for Tuesday would be suspended if former leader Carles Puigdemont tries to be re-elected without being physically present in the chamber.

The court also said that Puigdemont must seek judicial authorization to attend the session.

Catalonia’s separatist lawmakers have been considering voting Puigdemont back in as regional chief without him returning from Belgium, weighing options that included another parliament member standing in for him or him addressing the lawmakers via video.

The separatist leader fled Spain after the regional parliament made an unsuccessful declaration of independence on Oct. 27 in violation of Spain’s Constitution. He is wanted in Spain on possible rebellion and sedition charges and is likely to be arrested if he returns.