ISTANBUL (Reuters) : Turkish authorities detained an opposition Istanbul district mayor and five ​others on Wednesday over alleged ‌irregularities in building and occupancy permits, broadcaster NTV reported. Latest step in ​unprecedented legal crackdown on municipalities ​run by the main party ⁠opposing President Tayyip Erdogan. Uskudar municipality ​Mayor Sinem Dedetas detained, as ​well as district deputy mayor, secretary, an architect, a business agent and a ​contractor, NTV said. Municipality allegedly coordinated the approval of building permits through a system in ​which contractors ​were ⁠required to sign consultancy contracts in order to ​obtain permits, NTV reported. The opposition ​has ⁠rejected wave of allegations since 2024 and says the investigations ⁠are ​politically motivated.