An Istanbul court on Friday ordered the arrest of Istanbul's Üsküdar District Mayor Sinem Dedetaş and three other suspects pending trial as part of a corruption investigation into alleged bribery and abuse of office linked to construction and occupancy permits.

Dedetaş, her chief of staff Alihan Koçoğlu, architect Burçin Çevik and contractor Bülent Orhan Tozkoparan were remanded in custody after being referred to court by prosecutors. Two other suspects, Deputy Mayor Ceyhun Ünlü and intermediary Adem Altıntaş, were released under judicial supervision.

The investigation, led by the Istanbul Anatolian Chief Public Prosecutor's Office, centers on allegations that municipal officials manipulated the issuance of building and occupancy permits in exchange for illicit payments.

According to prosecutors, officials at Kent A.Ş., a municipal company, allegedly coordinated the permit process despite having no legal authority to do so. Investigators say the group used an encrypted internal communication network and color-coded spreadsheets to direct municipal staff during the approval process.

Financial Crimes Investigation Board (MASAK) findings cited by prosecutors allege that Kent A.Ş. signed a series of sham consultancy agreements with contractors worth a combined TL 1.08 million. Authorities claim the contracts were used to conceal the collection of TL 361.4 million from developers seeking construction permits.