Carles Puigdemont
He faces up to 25 years in prison for organizing an illegal referendum on secession last year.
Separatists declared victory in Thursday's regional election.
A Spanish judge issued an arrest warrant for Puigdemont after the independence crisis.
The Spanish government has vowed to "sack" Puigdemont and his government amid rising tensions.
WHAT'S HAPPENING
What Mas, Puigdemont, Junqueras and Romeva hadn’t achieved for years, the government did in just 24 hours.
