Brooklyn Rivera, a 73-year-old Nicaraguan indigenous leader, has died while in state custody, according to media reports.

Rivera had been detained by the Nicaraguan government for approximately three years prior to his death. The indigenous leader was a prominent figure in Nicaragua's indigenous rights movement.

Human rights organizations have condemned Rivera's death, characterizing his detention as arbitrary. The groups have criticized the circumstances surrounding his prolonged imprisonment by the current Nicaraguan administration.

The exact cause of Rivera's death and the specific conditions of his detention have not been immediately disclosed by Nicaraguan authorities. His death comes amid ongoing tensions between the Nicaraguan government and opposition figures, including indigenous rights activists.

Rivera's passing represents the loss of a significant voice in Nicaragua's indigenous community, where he had advocated for indigenous rights and autonomy for decades.