Riot police secure the roads around U.S. Embassy in Ankara, Turkey, March 5, 2018.
Riot police secure the roads around U.S. Embassy in Ankara, Turkey, March 5, 2018.

Turkey has detained four Iraqis in connection with a security threat to the U.S. embassy in Ankara, Turkish media reported.

The reports came as the U.S. embassy said it was closed Monday due to a "security threat."

"The Embassy will announce its reopening, once it resumes services," the U.S. embassy wrote in a statement on its website, advising Americans in Turkey to "keep a low profile".

Turkish media said the four Iraqis, who have been linked to Islamic State, were arrested in the Black Sea province of Samsun.

In 2013, a suicide bomber detonated outside the U.S. embassy in Ankara, killing himself and one Turkish security guard on duty. The attack was blamed on domestic leftists.

Turkey suffered a number of attacks linked to Islamic State in 2015 and 2016. A gunman attacked a nightclub during New Year's celebrations on January 1st, 2017, killing 39 people.

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