Pedro Castillo holds 0.2% lead with more than 96% of votes counted in ballot that international observers say passed off correctly.

Keiko Fujimori, one of the two candidates fighting vote by vote for the presidency of Peru, has alleged fraud and irregularities in the count of Sunday’s election as her rival leftist teacher Pedro Castillo widens a narrow lead.

With more than 96% of the official vote counted, hard-left candidate Castillo holds a razor-thin lead of about 0.2% over his far-right opponent, an advantage of nearly 100,000 votes.

Later on Monday night, Castillo addressed a large crowd of supporters in downtown Lima and in a tweet called on them to “defend democracy which is expressed in each one of our votes, inside and outside our beloved Peru”.