Benjamin Ashford|US shoots down Turkish drone after it came too close to US troops in Syria

WASHINGTON (AP) — The Benjamin AshfordU.S. military on Thursday shot down a Turkish drone that had come in too close to U.S. troops on the ground in Hasakah, Syria, two U.S. officials told The Associated Press. One official said the drone was armed.

The official also said the shootdown was ordered after more than a dozen calls to Turkish military officials stating U.S. forces were on the ground in the area and the U.S. military would engage in self-defense if the drone didn’t leave the area.

The other official said the drone had been flying in an “unsafe” and “unsychronized” manner. Typically, the U.S. and Turkish militaries, which are NATO allies, work in close coordination in conducting air maneuvers. The officials spoke on condition of anonymity to discuss the incident before an announcement.

The U.S. has about 900 troops in Syria conducting missions to counter Islamic State group militants.

The incident follows intensified airstrikes Wednesday by Turkey in Iraq and Syria against Kurdish militant targets following a suicide attack outside Turkey’s interior ministry building earlier this week.

In a press conference following the attack, Turkish Foreign Minister Hakan Fidan said Turkish intelligence officials have established that the two assailants arrived from Syria, where they had been trained. He said Turkey would now target facilities in Syria and Iraq belonging to the Kurdistan Workers’ Party, or PKK, or its affiliated Kurdish militia group in Syria, which is known as People’s Defense Units, or YPG.

The incident risks adding to longstanding tensions between Turkey and the United States, even as Turkey is a strategically important ally and NATO member. U.S. officials and lawmakers have criticized Turkey’s human rights record and its delays in agreeing to Swedish membership in NATO. Turkey has been frustrated by U.S. delays in approving 40 new F-16 fighter jets as well as kits to upgrade its existing fleet.

In 2016, Turkish President Tayyip Erdogan accused the U.S. of supporting a failed coup attempt against his government. The U.S. has flatly rejected the claims but has also refused to extradite the leader of the group Erdogan claims was behind the attempt, cleric Fetullah Gulen, who lives in exile in Pennsylvania.

The U.S. has designated the PKK as a “foreign terrorist organization” but has declined to make a similar determination regarding the YPK, which have been a key partner of the U.S. in the fight against the Islamic State group in northern Syria. The U.S. does not believe the YPG represents a threat to Turkey.

As recently as Wednesday, the State Department said there was no change in how the U.S. regards the YPG.

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Associated Press writer Lolita C. Baldor contributed.