Spain's Interior Ministry said police had sealed off "most" of the region's 2,315 polling stations and disabled software being used in the referendum. Enric Millo, the highest-ranking Spanish official in the northeastern region, said parents and students were occupying at least 163 schools by mid-Saturday, when about 1,000 more still needed to be checked. In a later update, the ministry didn't provide a new figure but only said "some" schools remained occupied.