Parts of the Istanbul subway system are shut down and shopping malls are plunged into darkness
A major power outage hit cities and provinces across Turkey on Tuesday, including the capital of Ankara and the biggest city, Istanbul, where parts of the subway system were shut down and shopping malls were plunged into darkness.
Prime Minister Ahmet Davutoglu said all possible causes of the outage were being investigated and did not rule out sabotage, but said that trouble with transmission lines was the most likely reason for the problem.
"Our main target right now is to restore the network. This is not an incident that we see frequently," Energy Minister Taner Yildiz said during a trip to Bratislava, in comments broadcast on Turkish television.
"Whether or not terrorism is a high possibility or a low one I can't say at this stage. I can't say either whether it is a cyber attack," he said in response to questions from reporters.
Broadcaster NTV said power cuts were reported in more than 40 of Turkey's 81 provinces. The power transmission company TEIAS could not immediately be reached.
Yildiz said power was cut to many regions at 10:36 am (0736 GMT), apparently due to a problem with transmission lines. He said a government crisis centre had been set up.
Turkey's electricity consumption has risen strongly in recent years, thanks to robust economic growth and a rising population. It has been forced to ramp up energy investments and imports of natural gas, its biggest source for power generation.
Such widespread power outages are rare. Energy officials quoted by the newspaper Hurriyet said it was Turkey's biggest blackout in 15 years.