Turkey's main opposition leader on Sunday pledged further protests against the jailing of Mayor Ekrem Imamoglu, President Tayyip Erdogan's chief rival, aiming to sustain Turkey's biggest demonstrations in more than a decade.

Protests that erupted across Turkey following the arrest of the main challenger to President Recep Tayyip Erdogan have taken a new direction with calls for a one-day shopping boycott.

Until now the relatively low-profile head of the country's main opposition party, Ozel has been thrust into the limelight, both at home and abroad.