The stunning move came after 48 hours in which Bolsonaro refused to concede to Brazilian President Luiz Inácio Lula da Silva and then threatened to attempt to annul the election result. He is under investigation by Brazil's Supreme Court for alleged corruption, money laundering and tax evasion in two cases.

Mr. Bolsonaro, who lost Sunday’s presidential election, fled Brazil for the United States via Argentina after the police canceled his passport in relation to an investigation.

© Eva Marie Uzcategui/Reuters

Officials in Argentina said Mr. Bolsonaro entered the country by land then flew to Ecuador. Brazilian police had asked him to hand over his passports because of his links to an investigation.

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