This file handout picture provided by the office of Iran's Supreme Leader Ayatollah Ali Khamenei on October 13, 2019, shows Iran's Islamic Revolutionary Guard Corps (IRGC) cadets during a graduation ceremony at Imam Hussein University in Tehran. (STRINGER / KHAMENEI.IR / AFP)

TEHRAN / BEIRUT - Iran's Ministry of Foreign Affairs issued a statement on Saturday to vehemently condemn the announced establishment of diplomatic relations between Bahrain and Israel.

The Iranian ministry warned that it will hold Bahraini authorities accountable for all the consequences of any action leading to Israel "creating insecurity in the Gulf region"

"Undoubtedly, the oppressed and right-seeking people of Palestine and the free Muslims in the world will never approve of normalization of relations with the usurping and lawless Israeli regime," the statement said.

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The Bahraini authorities have done a "fundamental mistake" "seeking shelter" in Israel instead of "gaining legitimacy from its people," it added.

The framework of the United States' presidential election due in November is mentioned in the note as a reason for the government of Bahrain to "sacrifice the cause of honourable Palestine," it noted.

The Iranian ministry warned that it will hold Bahraini authorities accountable for all the consequences of any action leading to Israel "creating insecurity in the Gulf region."

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Israel, said the statement, is "the constant source of threat to security in the region and the Muslim world and as the root cause of decades of violence, massacre, wars, terror and bloodshed in oppressed Palestine and the region."

Iran’s Revolutionary Guards said that Bahrain would face “harsh revenge” from its own people and the Palestinians over the Gulf Arab state’s move to normalise ties with Israel.

“The executioner ruler of Bahrain should await the harsh revenge of the Mujahideen (Islamic fighters) aiming to liberate Quds (Jerusalem) and the proud Muslim nation of this country,” the Guards said in a statement posted on their website

In Beirut, Hezbollah on Saturday condemned Bahrain for normalizing ties with Israel, the National News Agency of Lebanon reported.

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"Systems that are traitorous to their people have gone from secret ties with Israel to public normalization," Hezbollah's statement said.

Hezbollah added that all justifications used by these "authoritarian regimes" cannot justify their "great betrayal" for the Palestinian people and the just cause of this nation.

Israel and the Gulf state of Bahrain have reached on Friday a deal to fully normalize their relations.The United Arab Emirates and Israel also reached a peace accord last month.

With inputs from Reuters