Turkish officials say the death toll from Tuesday's bomb blast in the Kurdish-majority city of Diyarbakir has risen to 10 as three more people died of their injuries.
They say at least five children were among the dead. More than 15 others were injured in the blast that authorities suspect was triggered by a mobile telephone.
There was no immediate claim of responsibility.
Diyarbakir is the largest city in southeastern Turkey's mainly Kurdish region.
Kurdish rebels fighting for regional autonomy have stepped up attacks in the area since the beginning of the month.
One group, the outlawed Kurdistan Workers' Party, has claimed responsibility for a string of bombings earlier this month that blasted tourist resort towns along the country's Mediterranean coast.
Turkey's military has been fighting Kurdish separatists for the past 20 years. The conflict has killed more than 30,000 people.
Some information for this report was provided by AFP, AP and Reuters.