An attempted coup is being staged in Turkey as the military claims it has seized control of the country.
In the last hour gunfire was reported in the Turkish capital Ankara as military jets were seen flying overhead.
At the same time it has been reported that Istanbul's Bosphorus Bridge and Fatih Sultan Mehmet Bridge have been closed.
Prime Minister Binali Yildirim said those responsible for what he described as an attempted coup by a faction within the military would pay the highest price.
He says they would not be allowed to do anything to interrupt democracy.
Access has been restricted in Turkey to Facebook, Twitter and YouTube shortly after news that a military coup was under way, according to two internet monitoring groups.
Turkey Blocks, a group that monitors internet shutdowns in the country, and Dyn, which monitors internet performance and traffic globally, both reported it was difficult or impossible to access social media services in Turkey.
The government normally implements its internet restrictions through orders to Turkey’s main internet service providers.