A large power outage struck vast swaths of Chile on Tuesday, interrupting mining operations in the world's biggest copper producer and leaving residents of Santiago without electricity. Areas from the mining-intensive north to the central and southern regions that are home to most of the population,

President Gabriel Boric said electricity was being restored, but the situation remained unstable. He blamed the nation’s power companies for not restoring power faster.

Electricity providers across Chile scrambled to restore service Tuesday after a sweeping blackout plunged 90% of the country into darkness, stranding commuters, knocking cell service offline and paralyzing businesses and daily life.