BRASILIA, Brazil — Brazil’s Liberal Party has recognized President Luiz Inácio Lula da Silva’s victory in Sunday’s presidential runoff, even as its defeated candidate, Sen. Flávio Bolsonaro, refuses to formally concede and says he will challenge the result. Party president Valdemar Costa Neto said Monday the party accepts the election outcome but wants questions raised about the vote clarified. Bolsonaro initially said he would seek to annul the results, citing alleged irregularities. In a video posted Monday, he instead said he would seek to disqualify Lula’s victory over alleged abuses of political and economic power. He did not present evidence for the claims. Lula received just over 51% of valid votes, about 64.2 million, compared with more than 48%, nearly 59.8 million, for Bolsonaro, according to Brazil’s official election results. The dispute follows a Supreme Court order keeping polling stations open for two extra hours, until 7 p.m. Sunday. Lula’s campaign had sought the extension, citing disruptions to public transportation; Bolsonaro’s campaign also requested more time, pointing to heavy rain in southern Brazil. U.S. President Donald Trump questioned the election’s legitimacy on Monday, calling it “another rigged election” without offering evidence. Bolsonaro also said Brazil’s Federal Police had ordered him to surrender his passports and barred him from leaving the country. The order was issued by Supreme Court Justice Alexandre de Moraes in connection with a separate investigation, according to Bolsonaro, who said it followed remarks by his brother Eduardo suggesting he leave Brazil if he lost. Flávio Bolsonaro had visited his father, former President Jair Bolsonaro, in Brasília. The elder Bolsonaro is under house arrest after receiving a 27-year prison sentence for his role in an attempted coup following Lula’s 2022 election victory. Lula’s win marked a comeback after he trailed in the first round. Support from voters in major cities, including Rio de Janeiro and São Paulo, and gains among younger, older and working-class voters helped him secure reelection. He added more than 10 million votes compared with the first round, aided by increased turnout and support from voters who had backed other candidates or previously stayed away from the polls. The result leaves Lula facing a divided electorate and a conservative opposition strengthened by the Liberal Party’s gains in Congress. Political analyst Thiago Vidal said the margin gives Lula a mandate but warned that governing over the next four years will be difficult.