Iran's Foreign Ministry has summoned the Swiss ambassador to Tehran to protest calls made at a US Congress hearing for the assassination of Iranian officials, Press TV reported referring to an Iranian Foreign Ministry statement.
A grilling note has been surrendered to the Swiss envoy conveying Tehran's serious protests against the continuation of the brazen US policies in support of state terrorism, the statement said on Thursday.
The Swiss Embassy in Tehran officially represents US interests in the Islamic Republic.
The statement also quoted the head of the North America Bureau of Iran's Foreign Ministry as saying that the questionable silence of the US government against the threatening calls "contradicts the legal obligations of Washington regarding the fight against terrorism."
"Given the threats against our officials in this session, the responsibility of any terrorist act against Iranian authorities lies with the US administration," he added.
During a hearing of the US House of Representatives' Homeland Security on October 26, a number of American officials urged the White House to launch covert operations against Iran or even "kill" some of Iranian authorities over an alleged Iran-backed plot to kill the Saudi envoy to Washington.
On October 11, the US Justice Department accused Iran of plotting to assassinate Saudi Arabia's Ambassador to Washington, Adel al-Jubeir, with help from a man suspected of being a member of a Mexican drug cartel.
Tehran has categorically denied the allegations and stressed that the media hype fabricated by Washington is an attempt to deflect attention from the anti-corruption and anti-corporatism protests currently rocking the United States.