JAKARTA (REUTERS) - Indonesia's President Joko Widodo will on Friday (Aug 10) formally register as a candidate in the 2019 presidential election, according to the news website BeritaSatu.com.

"Tomorrow morning... I and my vice-president candidate will register to the election commission," Widodo was quoted as saying. He did not name his running mate.

Indonesia, the world's third-largest democracy and biggest Muslim-majority country, goes to the polls in April.

Candidates for president and vice-president have until Friday to register their nominations.