Those protesting against the arrest of Imamoglu have called for an economic boycott of businesses 'tied' to the current Turkish government [Getty/file photo]
Turkish authorities on Thursday detained at least 11 people suspected of spreading calls for a blanket boycott of purchases to protest the jailing of Istanbul's opposition mayor, the official Anadolu news agency reported.
Prosecutors have opened an investigation into the calls, accusing the suspects of inciting "hatred and discrimination", Anadolu said, adding that authorities were seeking five additional suspects.
The leader of the main opposition CHP party called for the purchase boycott on Wednesday to put more pressure on the government after the 19 March arrest of Istanbul's popular mayor Ekrem Imamoglu.
Imamoglu is the main rival to President Recep Tayyip Erdogan, and his detention set off a wave of mass protests not seen in Turkey for more than a decade.
Nearly 2,000 people, including several hundred students and young people, have been arrested since the start of the protests.
Some cafes, restaurants and bars heeded the boycott call and remained closed on Wednesday in Istanbul as well as in the capital Ankara, AFP journalists reported.
CHP leader Ozgur Ozel had already launched a call to boycott dozens of Turkish companies and groups reputed to be close to Erdogan's government.