"We expect that we will know all the results, on who is making it to the second round, in the first week of May," Salas told TV Peru on Sunday.
Peru held the first round of presidential elections on Sunday, however, according to Ipsos, out of the total 18 candidates, none managed to get over 50 percent of the votes needed to win.
According to early exit poll data, leftist Pedro Castillo is leading with 16.1 percent of the votes. He is followed by rightist economist Hernando de Soto with 11.9 percent and Keiko Fujimori, the daughter of former ex-president Alberto Fujimori, who also has 11.9 percent.