At least 11 people have been taken into custody Thursday in an anti-terror operation in Istanbul, police said, Anadolu Agency reported.
The operation came after anti-terror and intelligence police officers received intelligence that Daesh would attack the U.S. consulate building located in the city's Istinye district.
Officers raided a house in the city's Esenyurt district and detained 11 Syrian nationals for allegedly being Daesh members. One of them is suspected of being a senior member of the terror group.
Police said they had been closely monitoring investigations and that precautions were taken around the U.S. consulate.
The U.S. facility shut down its consular services for a day on Dec. 9 after receiving information of a security threat.