A breakdown in Pakistan's national power grid plunged the country into darkness on Saturday night, officials said.
"A countrywide blackout has been caused by a sudden plunge in the frequency in the power transmission system," Pakistan's Power Minister Omar Ayub Khan said on Twitter.
He said efforts were underway to determine the reasons behind the situation, and asked people across the country to remain calm.


Deal to end longest government shutdown in history clears Congress
Epstein emails say Trump 'knew about the girls' in newly released emails
Pakistan parliament approves more powers for army chief, curbs top court
Bus accident kills at least 37 in southern Peru
Trump asks Israeli president to pardon Netanyahu, in letter
