Here are some of the worst bombings in Turkey which have taken place in recent years.
Feb 17, 2016: At least 28 people were killed in a car bombing targeting the Turkish military in Ankara. The attack was claimed by a group calling itself the Kurdistan Freedom Falcons but the Turkish authorities say there was also a Syrian Kurdish link.
Jan 12, 2016: Ten German tourists were killed in a suicide attack by a Syrian Islamic State in Iraq and Syria (ISIS) bomber in Istanbul's Sultanahmet district, the city's historic tourist heart. He blew himself up among groups of tourists near popular spots.
Oct 10, 2015: A total of 102 people were killed and hundreds more hurt in the worst attack of its kind in modern Turkish history. Twin explosions set off by two suicide bombers outside Ankara's main train station were targeted at a pro-Kurdish peace rally.
July 20, 2015: At least 33 people were killed by a suicide bomber who walked into a group of student activists in the predominantly Kurdish town of Suruc near the border with Syria. Turkish officials blame ISIS.
May 11, 2013: Two car bombs killed at least 51 people in the town of Reyhanli near the Syrian border. It is not clear who is responsible, but Ankara blames pro-Damascus groups.
Feb 11, 2013: A Syrian mini bus exploded in Reyhanli at a border post, killing at least 13 people.
REUTERS, AGENCE FRANCE-PRESSE