On Oct. 11, 2011, Attorney General Eric Holder and FBI Director Robert Mueller announced the plot to assassinate Saudi Ambassador to the U.S. Adel al-Jubeir had been foiled, and one of the suspects, U.S. citizen Manssor Arbabsiar, had been arrested. The other suspect, Islamic Revolutionary Guard Corps (IRGC) Quds Force operative Gholam Shakuri, was never arrested and remains at large to this day.
According to the Department of Justice, Jubeir’s assassination was plotted from spring to October 2011. Throughout the year, Arbabsiar went to Mexico to enlist the services of someone he believed was an associate of a Mexican drug cartel.