The main rival to Turkey's President Recep Tayyip Erdogan has been formally arrested and charged with corruption, BBC reported.
Ekrem Imamoglu, the mayor of Istanbul, wasdue to be selected as the Republican People's Party's (CHP) 2028 presidential nominee in a vote on Sunday.
He has denied the allegations and said they are politically motivated. "I will never bow," he wrote on X before he was remanded in custody.
His detention sparked some of Turkey's largest protests in more than a decade. Erdogan has condemned the demonstrations and accused the CHP of trying to "disturb the peace and polarise our people".