More than 200 million people were left without power, which was gradually being restored to major cities across Pakistan early Sunday.

“Countrywide power breakdown including in capital centers due to sudden frequency droppage in power transmission system from 50 to 0. Federal Minister for Power is overseeing the entire process. We are told that the technical fault will be restored shortly insha'ALLAH,” Senator Faisal Javed Khan said.

The frequency drop resulted from a fault at Guddu at 11:41 p.m, according to Pakistan’s Energy Ministry.