Iran’s Revolutionary Guards threatened Bahrain on Saturday and said it would face “harsh revenge” from its own people and the Palestinians over its move to normalize 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 and quoted by Reuters.

Meanwhile, Iran's Ministry of Foreign Affairs issued a statement in which it condemned the establishment of diplomatic relations between Bahrain and Israel.

"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, according to the Xinhua news agency.

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 was mentioned in the statement as a reason for the government of Bahrain to "sacrifice the cause of honorable 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."

Israel, claimed 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."

The White House announced on Friday that US President Donald Trump, King Hamad bin Isa bin Salman al-Khalifa of Bahrain, and Prime Minister Binyamin Netanyahu agreed to the establishment of full diplomatic relations between Israel and the Kingdom of Bahrain.

Bahrain thus becomes the second Gulf state to normalize ties with Israel, after the UAE and Israel announced they were normalizing relations on August 13.

Friday’s agreement followed several reports in recent weeks that Bahrain and Israel were working to finalize an agreement to normalize ties between the two countries.

The Bahraini government announced last week that it had accepted a request from the government of the United Arab Emirates to allow flights between the UAE and Israel to cross its airspace.