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.

Turkish authorities have detained 1,133 people across Turkey since the start of protests five days ago against the detention of Istanbul Mayor Ekrem Imamoglu, Interior Minister Ali Yerlikaya said on Monday.

Protests have raged on for a fourth night in Istanbul following the arrest of the city's mayor, part of the largest demonstrations Turkey has seen in more than a decade. Ekrem Imamoglu, a rival of Turkish President Recep Tayyip Erdogan,

On the other, his jailed challenger, Ekrem Imamoglu, a hugely popular mayor seen by many as a future leader - although questions remain over his ability to run. “He is a significant threat to President Erdogan,” Turkey analyst Steven A Cook tells the BBC.

Opponents say President Recep Tayyip Erdogan manipulates the courts and the media to tighten his grip on power, and now is trying to prevent a top contender from running for president.

A media union said Turkish authorities arrested several journalists at their homes in a crackdown Monday, amid growing protests over the jailing of Istanbul’s mayor, a top rival to President Recep Tayyip Erdogan.