Anti-government protests killed one in the Iranian capital, Tehran, on February 14, 2011.
In the Iranian capital Tehran, anti-government groups, including members of the anti-Iran terrorist group Mujahedin Khalq Organization (MKO), have staged riots, killing two people.
The rioters opened fire on bystanders on Monday, leaving several other people injured as well, Fars news agency reported.
Iranian Deputy Police Chief Brigadier-General Ahmad Reza Radan told reporters on Tuesday that nine security forces were among the injured.
He went on to say that several people were also arrested in the Monday riots.
This came as small groups of supporters of defeated presidential candidates Mir-Hossein Mousavi and Mehdi Karroubi gathered in parts of the Iranian capital.
The opposition had asked for permission to hold a public rally "in support of the people in Tunisia and Egypt” but the Iranian government refused to give permission and declared all such rallies illegal.
The Iranian government said that no more demos were needed as the Iranian people already expressed their solidarity with the Egyptians and Tunisians on February 11 on the sidelines of rallies marking the 32nd anniversary of the victory of the Islamic Revolution.
Meanwhile, counter-demonstrations were held to denounce the move by the opposition to disrupt public order, and condemn the riots by the supporters of the defeated candidates.
This is while the US government has once again voiced support for anti-government moves in Iran.
US Secretary of State Hillary Clinton said Monday that Washington stands with Iranian opposition supporters.
"Let me, clearly and directly, support the aspirations of the people who are in the streets in Iran today," Clinton told reporters after meeting with the Republican speaker of the House of Representatives, John Boehner.
"We think that there needs to be a commitment to open up the political system in Iran, to hear the voices of the opposition and civil society," she added.
Iran has repeatedly condemned Western countries, in particular the US and Britain, for supporting post-vote riots that erupted following the June 2009 presidential election, which resulted in the victory of Iranian President Mahmoud Ahmadinejad.