Officials said three government ministers were on their way to the scene of Monday's blast, which happened during a press conference during the centre's opening.
A representative of a Kurdish party said the body of a suicide bomber had been found among the dead.
An eyewitness said those targeted were volunteers coming from Istanbul and heading to the Syrian city of Kobane for relief work.
More than 20,000 Syrian refugees are housed in camps around Suruc, a mainly Kurdish town. |
More than 20,000 Syrian refugees are housed in camps around Suruc, a mainly Kurdish town.
Suruc lies 10km from Kobane, another largely Kurdish town, which was the scene of an unsuccessful siege by the Islamic State of Iraq and the Levant (ISIL) group.