WASHINGTON (AFP) - The US Treasury Department on Wednesday hit Irans Mahan Air with sanctions, accusing it of secretly transporting members of the Revolutionary Guards and Hezbollah. The announcement came a day after Washington said members of the Guards were involved in a plot to kill the Saudi ambassador in Washington. On Tuesday, the Treasury Department announced measures against five individuals allegedly connected to a plot to assassinate the Saudi ambassador. The five include Manssor Arbabsiar and Gholam Shakuri, two men charged by the Justice Department with the alleged plot to kill ambassador Adel Al-Jubeir on American soil. Three other men - Abdul Reza Shahlai, Qasem Soleimani and Hamed Abdollahi - were also named as being linked to the Revolutionary Guard Corps-Qods Force plot.