Suu Kyi, who turned 77 in June, has previously been found guilty of multiple offenses ranging from bribery to election violations. On Monday, Suu Kyi was convicted on charges of misusing funds from a charity to build a house and lease state land, according to the Myanmar News Agency (MNA). Three other former government officials were also sentenced to three years in prison on similar charges, state media reported. Suu Kyi is being held in solitary confinement in a prison in the capital Naypyitaw and has denied all charges against her. International rights groups and world leaders have expressed concern over the worsening human rights situation in Myanmar and rejected ongoing trials against Suu Kyi. Kyi, calling them “unjust and unjust.” “The Myanmar military junta’s unjust conviction and sentence of Aung San Suu Kyi is part of its systematic assault on human rights across the country,” said Elaine Pearson, acting Asia director at Human Rights Watch (HRW). in a statement on Monday. “The military’s willingness to forcibly remove the country’s high-profile political leader reveals the brutality faced by lesser-known political prisoners,” Pearson said. Meanwhile, UN special envoy for Myanmar Nolin Heiser traveled to Myanmar on Monday to address the “deteriorating situation and immediate concerns”, the UN said in a statement. “The Special Envoy’s visit follows her extensive consultations with actors from across the political spectrum, civil society as well as communities affected by the ongoing conflict,” the statement said. CNN’s Irene Nasser and Richard Roth contributed reporting.