Turkish news agency Dogan reports at least 20 killed in bomb attack in Turkish capital Ankara

Bodies of victims are covered with flags and banners as police officers secure the area after an explosion in Ankara, Turkey, Saturday, Oct. 10, 2015. Two bomb explosions apparently targeting a peace rally in Turkey's capital Ankara on Saturday has killed many people a news agency and witnesses said. The explosions occurred minutes apart near Ankara's train station as people gathered for the rally organized by the country's public sector workers' trade union. (AP Photo/Burhan Ozbilici) (The Associated Press)

Bodies of victims are covered with flags and banners as a police officer secure the area after an explosion in Ankara, Turkey, Saturday, Oct. 10, 2015. Two bomb explosions apparently targeting a peace rally in Turkey's capital Ankara on Saturday has killed many people a news agency and witnesses said. The explosions occurred minutes apart near Ankara's train station as people gathered for the rally organized by the country's public sector workers' trade union. (AP Photo/Burhan Ozbilici) (The Associated Press)

Abdulhamit Bilici, editor-in-chief of Zaman newspaper, speaks to the media minutes before police detain Bulent Kenes, editor-in-chief of Today's Zaman, right, in his office in Istanbul, Turkey, late Friday, Oct. 9, 2015. Police have detained the chief editor of opposition English-language newspaper for posting a series of tweets critical of President Recep Tayyip Erdogan. Kenes was taken away from the newspaper's headquarters in Istanbul on Friday, as several supporters chanted: "Free media cannot be silenced!" The detention was televised live.(AP Photo/Isa Simsek, Zaman) (The Associated Press)