The Court of Cassations initiated an investigation into the HDP regarding an eventual indictment since the 2 March 2021.[13] On the 17 March 2021, the State Prosecutor to the Court of Cassation Bekir Şahin filed a lawsuit before the Constitutional Court demanding the closure of the HDP. The indictment included accusations of organizational ties with the PKK and to work against the unity of the state.[2][3] The membership of the legally existing Democratic Society Congress (DTK) was deemed enough evidence for a membership in a criminal organization.[14] The indictment also called for a five-year ban for 687 HDP politicians to be involved in political activities, amongst them all party chairs since its existence.[5] Zühtü Arslan, the president of the Constitutional Court instated a rapporteur responsible to verify if the indictment ahead of an examination of the courts judges.[15] But upon the rapporteurs request, the Constitutional Court returned the indictment to the State Prosecutor of the Court of Cassation on the 31 March, alleging procedural deficiencies which should be rectified.[16] On the 7 June 2021, the state prosecutor provided the Constitutional Court with an adapted indictment of 850 pages, confirming his demand for a closure of the party,[17][18] while lowering the demand a political ban for 451 politicians,[19] which was accepted by the court on the 21 June 2021.[11]