Vatican City, Jun 19, 2020 / 12:40 pm (CNA).- Pope Francis declared Friday that Sister Maria Laura Mainetti, an Italian religious sister killed by three teenage girls in a Satanic sacrifice, was a martyr for the Catholic faith.

The 60-year-old Sister of the Cross was in 2000 stabbed to death by three teenage girls in a park in Chiavenna, Italy.

Mainetti's killers were convicted and imprisoned.