The president of Myanmar Htin Kyaw has resigned, his office has announced.
No reason was given, but there have been growing concerns in recent months about the 71-year-old’s health after he appeared frail at official functions.
Htin Kyaw was sworn in as president in 2016 after landmark elections which ended decades of military leadership.
But he was essentially a ceremonial leader, with long-time opposition leader Aung San Suu Kyi acting as de facto president.
The statement posted on the presidency’s Facebook page said Htin Kyaw wanted to "take a rest".
Vice-President Myint Swe, a former general, would act as president until a new president is chosen within seven days, it said.
Ms Suu Kyi, who was jailed for years under the military junta, was banned from taking the top job.