"The Ministry of Foreign Affairs recommends that Bulgarian citizens planning to visit Istanbul, Ankara, Izmir and Gaziantep exercise caution in light of a threat of terror attacks in such places as airports, train stations, marine ports, squares, tourist sights, shopping centers, markets and other places with large numbers of people," the ministry said in a statement on Wednesday.
Earlier on Wednesday, Turkish Interior Minister Suleyman Soylu said the country's security forces had prevented a terror attack by Daesh group in the mausoleum of the founder of the Turkish Republic, Mustafa Kemal Ataturk, and the building of the first Turkish Parliament in Ankara.
Prior to that, Turkish media reported that Turkish police had eliminated a suicide bomber suspected of having links to Daesh during an anti-terrorist operation in Ankara.
On Monday, the Ankara authorities banned all public events until the end of November, including the Republic Day on October 29 and the Ataturk Memorial Day on November 10 amid a terror threat.