The National Security and Foreign Policy Committee of the Iranian Parliament (Majlis) has issued a statement in support of the Bahraini people, Press TV reported.
"The oppressed people of Bahrain are a part of the Islamic world and the Islamic Republic of Iran feels obligated to support them," Fars News Agency quoted the statement as saying on Saturday.
The US is definitely responsible for the murder of Bahrainis by ordering its "regional mercenaries" to invade the country and repress peaceful protesters, the statement added, calling on Saudi Arabia and the UAE to leave Bahrain's soil immediately.
The statement also called on the Organization of the Islamic Conference (OIC) to take serious action on regional developments.
Earlier on Friday, Iranian Parliament Speaker Ali Larijani, in a letter to Edward Ssekandi, Chairman of the Parliamentary Union of the Organization of the Islamic Conference Member States, called on the organization to hold an emergency meeting to help come up with a peaceful solution to the critical situation in Bahrain, Libya and Yemen.
More than 12 people have been killed and about 1,000 others have been injured during anti-government protests which started in Bahrain on February 14.
Bahraini protesters have been demanding the ouster of the Al Khalifa monarchy and constitutional reforms.
To help the Bahraini regime crush the anti-government protests, Saudi Arabia has deployed more than 1,000 troops to the country at the request of Manama.
In a similar move, the UAE has dispatched around 500 police forces to the oil-rich Persian Gulf monarchy.