Saudi King Abdullah bin Abdulaziz Al-Saud issued a royal decree Monday to remove Prince Ahmad bin Abdulaziz from the post of interior minister, and replace him with Prince Mohammed bin Naif bin Abdulaziz. The royal decree, carried by the Saudi Press Agency, said the king relieved Prince Ahmad from the post of interior minister \" upon his request,\" without mentioning reasons behind the decision. The king instructed concerned authorities to immediately implement the decree, according to the press agency.