The Pope has ordered his bishops to set up exorcism squads to tackle the rise of Satanism.
Vatican chiefs are concerned at what they see as an increased interest in the occult.
They have introduced courses for priests to combat what they call the most extreme form of "Godlessness."
Each bishop is to be told to have in his diocese a number of priests trained to fight demonic possession.
The initiative was revealed by 82-year-old Father Gabriele Amorth, the Vatican "exorcistinchief," to the online Catholic news service Petrus.
"Thanks be to God, we have a Pope who has decided to fight the Devil head-on," he said.
