"Around 40 of those injured in the terrorist attack remain in hospitals, with seven in poor condition. Among the 37 killed, two were terrorists," Erdogan said, while addressing the heads of Turkey's village administrations.
On Tuesday, Turkish authorities confirmed the identity one of the suicide bombers as a female Kurdistan Workers' Party (PKK) member Seher Cagla Demir, who is said to have had undergone training in the Syrian Kurdish People's Protection Units (YPG).
Over 70 people suspected of PKK links have been arrested since the blast amid a country-wide anti-terrorist operation.
The PKK has been fighting for Kurdish independence from Ankara since 1984. The group, which Turkey considers to be a terrorist organization, seeks to create a Kurdish state in parts of Turkey and Iraq.
Relations between Ankara and the Kurds both inside the country and in neighboring Syria and Iraq have been deteriorating. Tensions escalated in July 2015 as fighting between the PKK and the Turkish army resumed. Violence escalated further in December, when the Turkish authorities declared a curfew in a number of southeastern regions.