NEW : Scholar says plot does not fit Quds Force `` M.O . '' Ayatollah Khamenei calls the U.S. allegations `` absurd '' Iranian diplomat : Iran has no role in plotting against Israel, but it is ready to help if called upon by other countries. The U.S. alleges Iran was involved in a plot to kill a Saudi official in the United States .
NEW : Scholar says plot does not fit Quds Force `` M.O . '' Ayatollah Khamenei calls the U.S. allegations `` absurd '' Iranian diplomat : U.S. claims of a meeting with Iran are not true . The U.S. alleges Iran was involved in a plot to kill a Saudi official in the United States .