Turkey's top court on Tuesday ruled that businessman Osman Kavala's detention had not violated his right to liberty and security, state media said.
Kavala has been held arrested on charges related to a failed July 15 coup attempt in 2016.
Kavala had applied to the Constitutional Court earlier this year claiming his detention was unlawful and therefore violated his right to liberty and security.
But the General Assembly of the Constitutional Court ruled it did not amount to a violation, state-owned Anadolu news agency reported.
