The mayor of Tunceli was remanded in custody on Thursday, a local official said, as the crackdown on elected figures in eastern and southeastern Turkey gathered pace.
Mehmet Ali Bul had been arrested Wednesday as part of an anti-terror investigation. He was among a number of figures from the Democratic Regions Party (DBP) seized in raids in recent weeks. The party is the sister organization of the national opposition Peoples’ Democratic Party (HDP).
Those arrested have all been accused of links to the PKK organization.
In Van, the DBP mayor of the city, Bekir Kaya, and four other municipal officials were arrested early Thursday and the Interior Ministry announced it had suspended the mayors of Mardin and Siirt -- Ahmet Turk and Tuncer Bakirhan respectively -- from their duties. They have been replaced with Interior Ministry officials.
Bakirhan, from the DBP, had been arrested and remanded in custody on Wednesday.
Bul was arrested on a warrant issued by the Tunceli Public Prosecutor's Office as part of an ongoing investigation into the PKK, the official said on condition of anonymity due to restrictions on talking to media.
Police also searched his home and his municipality office. He was among 14 people arrested on the orders of the Tunceli prosecutor. All but one have been remanded pending trial.
Earlier this month, 13 lawmakers from the HDP were arrested. Ten, including co-leaders Selahattin Demirtas and Figen Yuksekdag, remain in custody awaiting trial on terrorism-related charges.
In October, the DBP co-mayors from Diyarbakir, the largest city in the southeast, were arrested and jailed pending trial on 'terrorism' charges.
The PKK -- listed as a terrorist organization by Turkey, the United States and EU -- resumed its decades-old armed campaign in July last year and has been responsible for the deaths of more than 1,100 security force members and civilians.
Around 10,000 PKK fightershave been killed or apprehended in the same period.
By Haydar Toprakci and Hatice Kesgin
