Federal officials say FBI and DEA agents have disrupted a plot to commit a “significant terrorist act in the United States” tied to Iran. The story has been corroborated by CNN and ABC. ABC Newsreports:

“The officials said the plot included the assassination of the Saudi Arabian ambassador to the United States, Adel Al-Jubeir, with a bomb and subsequent bomb attacks on the Saudi and Israeli embassies in Washington, D.C.

Bombings of the Saudi and Israeli embassies in Buenos Aires, Argentina, were also discussed, according to the U.S. officials.”

The case has been called “Operation Red Coalition” and traces back to an Iranian-American from Corupus Christi, Texas, who contacted a DEA informat in May, for help from a Mexican drug cartel to assassinate the Saudi ambassador. The Iranian-American thought he was dealing with a member of the Zetas Mexican drug organization, according to agents.

The assassination was allegedly “directed by elements of the Iranian Government” according to CNN.

U.S. Attorney General Eric Holder confirmed the plot shortly before 2:15p.m. ET at a press event. Holder confirmed 56-year-old Manssor Arbabsiar is accused of attempting to orchestrated a $1.5 million assassination plot, and is in U.S. custody.

Arbabsiar, a naturalized U.S. citizen, expressed “utter disregard for collateral damage” in the planned bomb attacks in Washington, according to officials who spoke with ABC News.

Holder confirmed the plot was linked to the Iranian government, specifically the Quds force, and that the conspiracy “constitutes a flagrant violation of international law.

The Quds force is an elite unit of Iran’s Islamic Revolution Guards Corps (IRGC).