Tension flared outside the Tanzanian consulate in Mombasa on Monday as human rights activists staged a protest demanding the immediate and unconditional release of three detained Kenyan nationals, including former Chief Justice Willy Mutunga.

The trio - Mutunga, Hussein Khalid, and Hanifa Adan - are reportedly being held at Julius Nyerere International Airport in Dar es Salaam.

Their arrest comes just a day after prominent Lawyer and Opposition Leader Martha Karua, along with two associates, was deported from Tanzania under controversial circumstances.

The detained Kenyans were part of a civil society mission to observe judicial proceedings involving Tanzanian opposition leader Tundu Lissu, raising concerns about regional cooperation and the state of democracy in Tanzania.