The mayors of two districts in southeastern Diyarbakır province have been taken into custody over alleged "autonomy" claims, police said on Wednesday.Seven people, including Sur Co-Mayor Seyid Narin, and Silvan Co-Mayor Yüksel Bodakçı were detained in an early morning operation, police said.The operation followed an investigation launched by Diyarbakir's Chief Public Prosecutor's Office after Narin and Bodakçı reportedly declared "self-rule", police added.Police are also looking for four more suspects.