A Turkish state-run news agency says a power outage has left millions without electricity in Istanbul and five other cities. On Saturday, Istanbul - a city of more than 12 million - was left without heating or electricity for several hours, and its subway and tram system were closed down.
The Anadolu Agency, quoting unnamed officials, said the outage was due to the breakdown of a power transformer near the north-western city of Bursa. It said the cities of Sakarya, Kocaeli, Tekirdag, Kirklareli and Edirne were also affected.