Istanbul mayor and main rival to Erdogan arrestedPolice in Turkey have arrested Istanbul's mayor Ekrem Imamoglu - a key rival of President Recep Tayyip Erdogan - as part of an investigation into alleged corruption and terror links.
Source: Istanbul mayor and main rival to Erdogan arrested (https://news.sky.com/story/turkey-istanbul-mayor-and-main-rival-to-erdogan-arrested-days-before-nomination-13331781)