A former Saudi official reportedly alleged that Saudi Arabia’s Crown Prince Mohammed bin Salman forged the signature of his father on the royal decree that launched the kingdom’s yearslong, stalemated war against Yemen’s Houthi rebels. Saudi Arabia did not immediately to a respond for comment over the allegations made without supporting evidence by Saad al-Jabri in an interview published Monday by the BBC. The kingdom has described him previously as “discredited.” The allegation comes as Prince Mohammed now serves as the de facto leader of Saudi Arabia, often meeting leaders in place of his father, the 88-year-old King Salman.