Hundreds of thousands of people gathered in Istanbul on March 29 to protest against the jailing of the city’s mayor Ekrem Imamoglu, President Tayyip Erdogan's main rival, as Turkey experiences its largest demonstrations in more than a decade.

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.

To pressure President Recep Tayyip Erdogan over the jailing of his top rival, the opposition wants Turks to boycott companies that back Mr. Erdogan and plans to organize a protest this weekend.