Twenty-eight people were killed on Monday in a suicide attack in the Turkish town of Suruc near the border with Syria, officials said.
"A terrorist attack took place in the town of Suruc in Sanliurfa today (Monday) around 12 pm local time (0900 GMT)," the interior ministry said in a statement.
An official in the prime minister's office said 28 people were killed and nearly 100 injured.
"It is a suicide attack," the official told AFP speaking on condition of anonymity.
The interior ministry condemned the attack and vowed that the perpetrators would be found as soon as possible and brought to justice.
"We are calling on everyone to show common sense in the face of this terrorist attack targeting our country's unity," the interior ministry said.
Prime Minister Ahmet Davutoglu will send three ministers -- Deputy Prime Minister Numan Kurtulmus, Interior Minister Sebahattin Ozturk and Labor Minister Faruk Celik-- to the region, his office announced.