Fr. Tentorio was killed on October 17 at around 7:30 a.m. inside his parish in Arakan Valley, North Cotabato. A former parish worker who witnessed the heinous crime said that the Italian priest had just gotten into his van when he was approached by a man wearing a helmet who shot him several times.
Si Fr. Tentorio ay pinaslang noong Oktubre 17, bandang alas-7:30 ng umaga, sa loob ng kanyang parokya sa Arakan Valley, North Cotabato. Ayon sa nakasaksi sa karumal-dumal na krimen, kasasakay lang ng Italyanong pari sa kanyang van nang lapitan siya ng isang lalaking nakasuot ng helmet at pagbabarilin hanggang sa mapatay.