A man who severely injured author Salman Rushdie in a frenzied knife attack in western New York was motivated by a Hezbollah leader's endorsement of a fatwa calling for Rushdie's death, prosecutors said Wednesday in announcing new terrorism charges.

The three-count indictment unsealed in U.S. District Court in Buffalo offered for the first time a potential motive for the 2022 attack on "The Satanic Verses" author.