Turkish authorities have detained Istanbul Mayor Ekrem Imamoglu, a key rival to President Recep Tayyip Erdogan, as part of corruption and terror investigations, according to state broadcaster TRT, citing the Istanbul Prosecutor’s Office.

ISTANBUL (Reuters) -Turkish authorities detained President Tayyip Erdogan's main political rival on Wednesday on charges including corruption and aiding a terrorist group, in what the main opposition party called "a coup attempt against our next president.

Istanbul Mayor Ekrem Imamoglu, President Recep Tayyip Erdogan’s main political rival, was detained days ahead of his potential nomination as the presidential candidate for the opposition Republican People’s Party.