They exploded nine seconds apart . Another explosion took place just over an hour later in the middle carriage of a three - carriage train at Maalbeek metro station . 35 340 Istanbul January 12 , 2016 Suicide bomber detonates conflict.attack.bombing in the city 's tourist - heavy historical centre Nabil Fadli , a Syrian member of the Islamic State walked up to a tour group standing in Sultanahmet Square and blew himself up . Most of the victims were German but also came from Peru , South Korea and Norway .