Amazing Girl

"If you consider the way the attack happened and the general trend of it, we have identified Islamic State as the primary focus," Davutoglu told Turkey's NTV television. "It was definitely a suicide bombing...DNA tests are being conducted. It was determined how the suicide bombers got there. We're close to a name, which points to one group."

The Haberturk newspaper has cited police sources as saying the type of explosive and the choice of target pointed to a group within Islamic State known as the 'Adiyaman ones', a reverence to Adiyaman province in southeastern Turkey.

Turkey is vulnerable to infiltration by Islamic State, which holds swathes of Syrian land abutting Turkey where some two million refugees live. But there has been no word from the group - usually swift to publicly claim responsibility for any attack it conducts - over the Ankara bombing or two very similar incidents earlier this year.

Opponents of Erdogan, who has led the country over 13 years, blame him for the attack, accusing the state at best of intelligence failings and at worst of complicity by stirring up nationalist, anti-Kurdish sentiment.