The Ankara court said 20 of the 36 suspects who were arrested would remain in custody while it issued a red notice for the remaining 16 fugitives. Prosecutors have asked for life sentences for each suspect on charges of one count of "attempting to change the constitutional order" and 100 counts of murder.
If convicted, the suspects could receive combined sentences of up to 11,750 years in prison for attempting to kill 391 people, according to the indictment, The October 2015 Ankara train station bombing targeted protesters gathered at a peace rally.
Turkish prosecutors said the Daesh terror group was behind the attack.