Hundreds of mourners gathered on Sunday for the funerals of at least 12 people who were killed in an explosion in the southern Turkish city of Gaziantep.
At least 50 people were killed on Saturday when a suspected suicide bomber detonated his explosives among people dancing on the street at a wedding party.
Other funerals would have to wait because many of the victims were blown to pieces and DNA forensics tests would be needed to identify them, security sources said.
President Tayyip Erdogan said it was likely that Islamic State militants carried out the late-night attack.
A prosecutor's office said they had found a destroyed suicide vest at the blast site.
Angry mourners threw bottles at the police and chanted "murderer Erdogan."
Islamic State has been blamed for other attacks in Turkey, often targeting Kurdish gatherings in an effort to inflame ethnic tensions.
The deadliest previous attack was in October at a rally of pro-Kurdish and labour activists in Ankara when suicide bombers killed more than 100 people.
Saturday's wedding party was for a member of the pro-Kurdish Peoples' Democratic Party.