"According to the Incas, a person struck by lightning received great honor—a god expressed interest in that person," said bioarchaeologist Dagmara Socha.
The Peruvian sacrifice site also saw over 200 llamas slaughtered.
"It is unlikely that these children and young people were killed in a massacre or conflict," one of the researchers said.
More than 500 years ago, a mass sacrifice of 140 children occurred in what is now Peru.
Archaeologists uncovered the remains in burial ground containing at least 47 tombs.