Bahrain severed diplomatic ties with Iran on Monday, just a day after Saudi Arabia did the same, AFP reports.
Iranian diplomats were given notice "to leave the kingdom within 48 hours," BNA state news agency said on Twitter.
Saudi Foreign Minister Adel al-Jubeir issued a similar statement on Sunday.
The move followed demonstrations held in front of the Saudi embassy in Tehran and its consulate in the northeastern city of Mashhad by angry protesters, censuring the Al Saud family for the killing of the top cleric as part of a crackdown on Shias mostly residing in the kingdom's Eastern Province.
