Supreme Leader of the Islamic Revolution Ayatollah Seyed Ali Khamenei rapped the U.S. accusations that two Iranians planned to assassinate the Saudi Arabian ambassador to Washington as "meaningless and useless.”

“They attempted to find an excuse through raising a meaningless and useless accusation against a number of Iranian nationals to wage a political propaganda attack on the Islamic Republic of Iran to introduce it as a sponsor of terrorism, but the conspiracy failed and will fail to produce any result and will remain futile and ineffective like their other measures," Ayatollah Khamenei said on Saturday, October 15, addressing a large gathering of people in the Western Kermanshah province.

"(Such plots) will lead to their own further isolation contrary to their imaginations," he added, Fars News Agency reported.

The remarks came after U.S. officials on Tuesday alleged that they had charged two Iranians, one of them a dual U.S. citizen, with preparing to carry out a bomb attack on the Saudi envoy under a plan "conceived, sponsored and directed from Iran".