Turkey is close to identifying one of two suicide bombers responsible for the bombing attack in the capital Ankara which killed at least 97 people, Prime Minister Ahmet Davutoglu said in an interview with broadcaster NTV on Monday.

Islamic State in Iraq and Syria (ISIS) is the focus of our investigations, he added.

“We are close to a name (for one bomber). That name points to an organisation,” Mr. Davutoglu said.

Turkish Prime Minister, however, remained cautious, saying that authorities were investigating three groups including ISIS but also the Kurdistan Workers’ Party (PKK) and the far-left Revolutionary People’s Liberation Party-Front (DHKP-C) as “potential suspects.”