Turkey's National Intelligence Organization (MİT) said in two separate warnings issued on Dec. 17, 2015, and Jan. 4 that the Islamic State (IS) was “in preparations for attacks on NATO representative offices, embassy and consulate buildings, spots where foreign citizens are populated and tourists, thus suicide bombers have entered the county and it is evaluated that they might have entered Istanbul and Ankara.”
The MİT started working on the matter earlier upon intelligence that the terrorist organization was planning attacks on countries which had taken part in the U.S.-led operations in Syria, in particular Turkey.
The warning was shared with the police headquarters and anti-terror units in Istanbul and Ankara and security forces and gendarmerie near the country's borders, along with other units.
The recent warning asked for the pursuit of suspects already marked by intelligence.
Most of these suspects, including nine women and 10 men, were of Syrian origin.
On Jan. 4, the MİT warned foreign countries, including Germany, the Netherlands and France, over possible attacks, giving the names of 13 potential suicide bombers.