(CNN)Military units have attempted an uprising in Turkey. Early Saturday, it was unclear whether the army or the elected government is in control. In the country’s biggest cities, Istanbul and Ankara, there were reports of gunfire. In Istanbul, bridges were blocked by a group of soldiers and military vehicles. The U.S. Embassy reported low-flying military jets.

Here’s what we know so far:

    Military coup underway

    Military issues statements about seizing control: “The political administration that has lost all legitimacy has been forced to withdraw,” said a Turkish state broadcast anchor, reading from a statement from the “Peace in the Nation” council. The announcement declared the imposition of martial law, with a curfew in effect until further notice.
    The Turkish military issued statements to media claiming it has “fully seized control of Turkey” to maintain democratic order, that rule of law must remain a priority and international relations must remain.

    Gunshots

    They will not be successful: Erdogan told CNN Turk, “I do not think that this will be successful. In history, nowhere in the world has a coup been successful. …Sooner or later, they all fail.”
    Prime Minister Binanli Yildirim called the uprising “an attempt against democracy and the will of the people.” He said the government remains in control and that an attempted mutiny by junior officers has been thwarted. He told state news agency Anadolu, “Never ever will we allow activity that disrupts democracy.”

    The global response

    President Obama urges support for democratically-elected government: According to a White House statement, President Barack Obama spoke by phone with Secretary of State John Kerry to discuss the events. The President and secretary agreed that all parties in Turkey should support the democratically-elected government of Turkey, show restraint, and avoid any violence or bloodshed.
    U.S. State Department confirmed reports: The State Department posted on Twitter, “Confirming media reports of gunshots & possible attempted uprising in #Turkey.” The State Department tweeted that social media is blocked in Turkey and urges Americans to use phone and email to communicate.
    The State Department and U.S. Embassy in Ankara also warned Americans in country to be vigilant and shelter in place.
    NATO calls for calm: NATO Secretary-General Jens Stoltenberg said in a statement: “I have just spoken to the Turkish foreign minister Mevlut Cavusoglu. I am following events in Turkey closely and with concern. I call for calm and restraint, and full respect for Turkey’s democratic institutions and its constitution. Turkey is a valued NATO ally.”
    CNN’s Barbara Starr says that a coup in Turkey would be a diplomatic crisis for U.S. and NATO because Turkey is home to a military base used to stage airstrikes against ISIS and Turkey has received military support from the U.S.
    British government advised nationals: A statement from the British Foreign Office said, “we are concerned by events unfolding in Ankara and Istanbul. Our Embassy is monitoring the situation closely. Given the current uncertainty we advise British nationals to avoid public places, remain vigilant and monitor the FCO website for travel advice.”

    Turkey fast facts

    Turkey has been a member country of NATO since 1952, and is the only predominantly Muslim member.
    Turkey has faced a series of terrorist attacks — the latest, just last month in Istanbul, when terrorists killed at least 42 people and wounded more than 100 at Istanbul’s Ataturk Airport.

    Read more: http://www.cnn.com/2016/07/15/world/turkey-military-coup-what-we-know/index.html

    Turkey military coup: What we know