At least 89 people across Spain’s semiautonomous Catalonia region were injured on Sunday in clashes with police, according to local authorities. The protests, which drew tens of thousands, came hours after the region’s former leader, Carles Puigdemont, was detained by German police as he was entering the country from Denmark.

The former regional leader had traveled around Europe relatively freely after an earlier international warrant for rebellion and sedition was withdrawn in December. But more arrests were ordered last week, and Spanish authorities reissued their warrant on Friday.

Puigdemont was on his way from Finland to Belgium on Sunday when German authorities stepped in. A first court hearing over whether he should be extradited to Spain is expected later Monday, but no decision is expected.

He and other Catalan politicians stand accused of pursuing a banned independence referendum last October. While the Catalan government argued that the region should be able to decide its own status, Spain denounced the referendum as illegal and harshly cracked down on the October vote.

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