LIMA, Peru (AP) — Police in Peru raided the homes Friday of the now-resigned elections chief and five other officials in an investigation into a ballot shortage and other irregularities in the first round of the presidential election on April 12.

Agents and prosecutors also raided the home of the legal representative of Galaga, a private company responsible for transporting election ballots to voting centers, anti-corruption police said on social media. Agents gathered mobile phones, documents and other evidence in the raids, police said.

The Associated Press