Spain's top court has sent Belgium an arrest warrant for Catalonia's former pro-independence leader Carles Puigdemont.
It comes days after the Spanish Supreme Court sentenced nine Catalan leaders to jail terms ranging from 9-13 years for sedition.
Belgium had earlier turned down Spain's requests, first in 2017 and then in 2018.
Puigdemont went into self-imposed exile in Belgium in autumn 2017 after Catalan separatist leaders organised a referendum that Spanish courts had ruled illegal.
"Considering the complexity of the file and the two European arrest warrants previously sent against Mr. Puigdemont, the case will require a thorough judicial analysis," The Brussels prosecutor's spokeswoman said on Wednesday.
It may take weeks to reach a decision, she said, adding that the key issue for local authorities would be to decide if the convictions for sedition were legally recognised in Belgium.

Saudi civil defence sends all-clear after alerts issued for capital Riyadh
11 Syrian soldiers killed in weapons depot explosion
Number of people displaced worldwide falls, UN says
White House turns away reporters after Trump's ban
Israeli strikes kill three people in Gaza, medics say
Trump says he will create 'AI Force,' name AI czar
Washington approves potential $2.7 billion air defence sale to Ukraine
US and Denmark reach deal on Greenland
