World Bulletin / News Desk
An anti-extremism police team detained Aysel Tugluk as part of an investigation carried out by the Diyarbakir Chief Public Prosecutor's Office, the source, who spoke on condition of anonymity due to restrictions on talking to the media, said.
Tugluk will be sent to southeastern Diyarbakir province following a health check-up.
Last month, 13 HDP lawmakers were arrested, 10 of whom, including HDP Co-Chairs Selahattin Demirtas and Figen Yuksekdag, remain in custody awaiting trial on extremism-related charges.
The lawmakers face prosecution under anti-extremism legislation after their parliamentary immunity was lifted earlier this year.
The government has accused the HDP of having links to the PKK, which is listed as a extremist organization by Turkey, the U.S., and EU.