Castillo, whose supporters include Peru’s poor and rural citizens, defeated right-wing politician Keiko Fujimori by just 44,000 votes.
Uncertainty over the June 6 vote mounts as supporters of socialist Pedro Castillo and right-wing rival Keiko Fujimori take out rallies.
Political tensions remain high in Peru following the June 6 election in which socialist Pedro Castillo declared himself the winner. But his rival conservative Keiko Fujimori has levelled accusations of election fraud.
The bus fell all the way to the bottom of a 400-metre ravine, leaving bodies scattered across the slopes of a hill in the desert region, press reports say.
Under Peruvian law, an election victory for Keiko Fujimori would see graft charges suspended until after her term, but defeat would see her go to trial.
Right-wing presidential candidate Keiko Fujimori raises allegations of "irregularities" and "signs of fraud" in Sunday's run-off election as her rival, the far-left trade unionist Pedro Castillo, took a razor-thin lead in the vote count.
The statistical tie had Fujimori leading with 50.3 percent of the vote, while Castillo had 49.7 percent, within the margin of error of plus or minus 3 percentage points, according to the poll.
The polarising runoff contest between rural teacher Pedro Castillo and Keiko Fujimori, making her third run for the presidency, comes after the government’s admission that Covid-19 deaths are at least 2.5 times higher than previously acknowledged.
Research conducted between 2018 and 2020 on 11 indigenous communities in southeast Espinar province of the Cusco region found that 8,000 people were affected by high levels of lead, arsenic, cadmium, mercury and manganese.
With nearly 90 percent of ballots counted, leftist Pedro Castillo was in the lead with 18.83 percent - much higher than predicted by opinion polls which had not even placed him in the top five.
Hernando de Soto, a liberal economist, and leftist professor Pedro Castillo, have both edged to the front of the pack following late gains in support, according to the latest opinion poll.
Health officials conducting a trial involving 32,000 volunteers found the Covid-19 vaccine by Oxford University and AstraZeneca has 79 percent efficacy in preventing symptomatic illness with no increased risk of blood clots.
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