LIMA, Peru (AP) — Presidential candidate Roberto Sánchez said Tuesday that he’ll refuse to recognize results of Peru’s June 7 presidential runoff if officials count ballots cast by Peruvians overseas that he alleges were processed improperly.

With 99.72% of votes counted, Sánchez trails conservative candidate Keiko Fujimori by just 40,000 votes and is expected to lose the election, once authorities finish processing tally sheets. More than 18 million Peruvians participated in the runoff.