Lawyers for Tanzania's jailed opposition leader Tundu Lissu filed a complaint on Friday to the United Nations Working Group on Arbitrary Detention in a bid to ramp up international pressure for his release.
Lissu, chairman of Tanzania's main opposition party and runner-up in the 2020 presidential election, was arrested last month and charged with treason, a capital offence, over comments he is alleged to have made calling on supporters to prevent national elections in October from going ahead.
