Among those detained are pro-Kurdish People`s Democratic Party`s head of districts and former mayors.
The detainees are accused of illegally collecting money by force on behalf of the PKK, establishing illegal courts as well as a political academy to recruit young people for the group.
Turkey has launched air strikes against the PKK targets in Syria and Iraq since June, breaking a three-year peace process with the group.
The PKK is listed as a terrorist organization by the United States, the European Union and Turkey.
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