Istanbul's opposition-run municipal council on Wednesday elected an interim mayor to run the city, after mayor Ekrem Imamoglu was jailed pending trial over graft charges that he and his supporters deny and call politicised.

The detention last week of Mr Imamoglu, the biggest political rival of president Recep Tayyip Erdogan, triggered the largest anti-government demonstrations in Turkey in more than a decade and led to mass arrests, as hundreds of thousands heeded opposition calls and took to the streets in mostly peaceful protests.

More than 1,100 people, including some journalists, were detained in protests against Turkish President Erdogan after the arrest of his rival, Istanbul Mayor Ekrem Imamoglu.