Turkish police detained Istanbul's powerful mayor Ekrem Imamoglu early Wednesday as part of a corruption probe, a move his opposition CHP party slammed as a "coup".A key figure within the CHP, Imamoglu is President Recep Tayyip Erdogan's main political rival,

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 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.