Martha Karua, the People's Liberation Party leader, claims Tanzanian officials denied her entry at Mwalimu Julius Nyerere International Airport in Dar es Salaam.

Karua said immigration officers referred her passport to a supervisor who consulted senior officials before informing her that her entry had been refused. "The supervisor has now informed us that our entry into Tanzania has been denied, no reasons given," said Karua on X.

She added that Human Rights Defender Gloria Kimani and Lynn Ngugi, both of whom had accompanied her, were also detained under unclear circumstances.

Karua is expected to represent opposition figure Tundu Lissu, who has been charged with treason, a crime for which the maximum sentence is the death penalty.