“We do not believe that the organizers of this terrorist act will be found and brought to justice or that anyone in the government will resign. If they do not resign then their leaders are apparently content with the situation… This terrorist act is not aimed against our state and the unity of our people, it is an attack on the people by the state,” Demirtash added.
The two explosions occurred seconds apart outside the capital's main train station as hundreds of opposition supporters and Kurdish activists gathered for a peace rally organized by Turkey's public workers' union and other groups.
The protesters planned to call for increased democracy in Turkey and an end to the renewed violence between Kurdish rebels and Turkish security forces.
Authorities are exploring the possibility that the blasts may have been caused by two suicide bombers.
There was no immediate claim of responsibility but Prime Minister Ahmet Davutoglu said there were "strong signs" that the two explosions — which struck 50 meters apart just after 10 a.m. — were suicide bombings. He suggested that Kurdish rebels or Islamic State group militants were to blame.
Prime Minister Ahmet Davutoglu announced three days of national mourning during a televised press conference on Saturday afternoon.