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

The second half of Turkish President Recep Tayyip Erdogan's more than two-decade reign has been a tale of deepening authoritarianism. Analysts say the arrest of the Turkish leader's most popular political opponent on contested charges may be its most dangerous chapter to date.

The head of Turkey's main opposition party visited jailed Istanbul Mayor Ekrem Imamoglu on Tuesday after six nights of massive protests calling for his release. Imamoglu, arrested on March 19 on corruption charges,