Turkish Prime Minister Ahmet Davutoglu said Monday that ISIS is the chief suspect in twin bombings that killed at least 97 people in the capital, Ankara, on Friday.
ISIS has not claimed responsibility for the carnage, which struck during a peace rally.
The terror group has also not claimed responsibility for a suicide bombing in the town of Suruc near the Syrian border in July that killed 34 people.
Using the Arabic acronym for ISIS, Daesh, Davutoglu told Turkish television NTV, "We investigate Daesh as our No. 1 priority. There (has) been good progress toward identifying a name. That name points to an organization."
Davutoglu also said the Kurdish PKK and the leftist DHKP-C could be behind the two suicide bombers who detonated their explosives near the city's main train station.
Here's a little more about those two less globally known groups.