The Turkish military announced late Friday that it was seizing power in Turkey to restore order, according to a statement carried by the Dogan news agency.
Earlier, Turkish Prime Minister Binali Yildirim said on local television that there had been an "attempt" by elements within the military, but denied it was a coup. He pledged that democracy would not be overthrown.
In 1997 the military forced the government from office in the "post-modern coup." The last full military takeover occurred in 1980, including suspension of the constitution.
Blocked social media websites.
Twitter, Facebook, and YouTube were blocked in Turkey on Friday as members of the military attempted to take over the Turkish government in what appears to be a coup d'état.
Group within army attempting to overthrow democracy
An official with the office of President Recep Tayyip Erdogan says a "group within the armed forces have made an attempt to overthrow the democratically elected government outside the chain of command."
The official says a Turkish military statement issued earlier was not issued by the top command.
Reports: Military takes over Istanbul airport
F-16 fighter jets swooped in over Ankara, the Turkish capital, while soldiers attempted to seize control of the seat of government.
The Turkish military has taken over control of Istanbul's main Ataturk international airport and stopped flights, CNN Turk reports.
Erdogan calls for people to take to the streets against military coup
President Recep Tayyip Erdogan in a phone call to broadcaster CNN Turk says he remains the president of the country and the head of the army and calls for the people to take to the streets against the coup.
Military declares curfew across whole of Turkey
A military statement read by an anchorwoman on state broadcaster TRT says a curfew is imposed on all of Turkey until further notice for people's safety.