Guterres, widely known by his nom de guerre “Lu Olo,” died at Prince Court Medical Center in Kuala Lumpur, Malaysia, where he had been receiving intensive care treatment, according to a statement posted on his official Facebook account. The cause of death was not disclosed.

His death marks the passing of one of the most prominent leaders of Timor-Leste’s independence generation, whose political career spanned the resistance movement, constitution-building process and the presidency of Southeast Asia’s youngest nation.

Guterres served as president from 2017 to 2022 after decades of involvement in the campaign that culminated in Timor-Leste’s independence in 2002.

Malaysian Prime Minister Anwar Ibrahim paid tribute to Guterres, describing him as a leader who remained devoted to the ideals of freedom and democratic nation-building throughout his life.

The Revolutionary Front for an Independent East Timor (Fretilin), the political party Guterres led for many years, said his death represented a profound loss for those committed to a sovereign and democratic Timor-Leste. The party credited him with promoting national unity, dialogue, peace and political stability during his years in public service.

Born on Sept. 7, 1954, in Ossu in the Viqueque district of what was then Portuguese Timor, Guterres emerged as a key figure in the resistance movement following Indonesia’s invasion in 1975. He later became one of the leading political figures guiding the territory through its transition toward independence after the United Nations-backed referendum of 1999.

In 2001, Guterres was elected president of the Constituent Assembly, overseeing the drafting of the country’s constitution ahead of formal independence. Following independence in 2002, he became the first speaker of the National Parliament.

After several unsuccessful presidential campaigns, Guterres secured victory in the 2017 election and served a single five-year term. In 2022, he was defeated in his bid for re-election by current President Jose Ramos-Horta, another veteran of the independence movement and Nobel Peace Prize laureate.

His political career reflected the trajectory of Timor-Leste itself, from anti-colonial and resistance struggles to democratic governance and state institution-building.

Guterres is survived by his wife, Cidalia Lopes Nobre Mouzinho Guterres, and their children. Funeral arrangements have not yet been announced.