The explosions occurred near a train station where people were gathering for a peace march to protest against the conflict between the state and Kurdish fighters in southeast Turkey.
Video footage on social media showed several bodies lying on the ground, as survivors tried to give first aid to the wounded.
The peace protest, which was called for noon, was cancelled.
Emergency crews were at the scene, responding to the injuries, with ambulances rushing off to several local hospitals. There were reports of shortages of blood and calls for donations.
The peace rally was called ahead of a snap election on November 1 and after violence erupted in July between Turkish army and the Kurdistan Workers’ Party (PKK) armed group, ending a two-year ceasefire.
The unrest was kicked off by the 20 July bombing that hit a pro-Kurdish group’s meeting in the Turkish southern town of Suruc, which the authorities have blamed on the Islamic State of Iraq and the Levant group.
Turkish government officials said Saturday’s blasts in Turkey were a “terrorist attack” and that they were investigating claims that a suicide bomber was responsible.
Prime Minister Ahmet Davutoglu was to hold a meeting with Deputy Prime Minister Yalcin Akdogan, government officials and security chiefs at 12pm (09:00 GMT) in response to the attack, Davutoglu’s office said.
Source: Al Jazeera And Agencies