ANKARA (Reuters) -Turkish authorities have detained a lawyer for jailed Istanbul Mayor Ekrem Imamoglu, President Tayyip Erdogan's biggest political rival, an MP of the main opposition Republican People's Party (CHP) said on Friday.

Turkish authorities detained and deported BBC correspondent Mark Lowen​ and arrested other journalists amid the largest nationwide protests in a decade.

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.