Mustafa Bayram, mayor of the Halfeti district of the southeastern province of Şanlıurfa from the pro-Kurdish Democratic Regions Party (DBP), was detained on Friday as part of a terrorism investigation.
Police teams conducted a search at the municipal building on Friday and seized some documents.
Media reports said detention warrants were also issued for 24 others as part of the same investigation.
Turkey has stepped up its crackdown on Kurdish politicians in recent months. Trustees have been appointed to dozens of municipalities in the country’s predominantly Kurdish Southeast while Turkish courts in November arrested 10 pro-Kurdish Peoples’ Democratic Party (HDP) deputies including the party’s co-chairs.
The DBP is the local branch of the HDP.
Turkey has also arrested dozens of local Kurdish politicians on terrorism charges.
The developments have attracted widespread criticism from the region and Western countries.