Huge protests as Istanbul mayor jailed on day of likely presidential nomination

Ekrem mamolu, rival of Recep Tayyip Erdoan, placed in pre-trial detention along with dozens of staff and officials

An Istanbul court has formally arrested the city's mayor, Ekrem mamolu, on corruption charges, sending him to pre-trial detention on the day he received his party's nomination to run for president, while tens of thousands of demonstrators gathered in the city.

The mayor of Turkey's largest city and a rival of the president, Recep Tayyip Erdoan, was jailed on charges of leading a criminal organisation, bribery, misconduct and corruption, along with dozens of his staff and municipal officials.