Iran’s Parliament is concerned that the people who planned an attack on the speech of parliamentary chief Ali Larijani in Qom on February 10 have other plans to disrupt the system.

The Mehr news agency reports that Avaz Heydarpour, a member of Parliament’s National Security and Foreign Policy Commission, said on Saturday that the probe into the events of February 10 in Qom has determined there is cause for the commission to be gravely concerned.

On February 10, Ali Larijani’s speech to mark the anniversary of the Revolution was interrupted by a group of Mahmoud Ahmadinejad supporters, who chanted slogans and threatened to become rowdy.

Later it was announced that seven people had been arrested in connection with the incident, and a meeting was convened for representatives of the Interior Minister, the Ministry of Intelligence, the police department and the Revolutionary Guards to investigate the issue.

Heydarpour says the probe indicates that many forces were at play in organizing the attack, and Parliament is calling for a firm confrontation of the perpetrators.

The brewing differences between parliamentary head Ali Larijani and President Mahmoud Ahmadinejad had reached a climax before the February 10 attack in Qom. During the parliamentary session to impeach Ahmadinejad’s labour minister, the president presented himself in Parliament to show a video recording of Ali Larijani’s brother in conversation with Saeed Mortazavi, calling it evidence that the Larijani family is guilty of corruption and abuse of power.

The public disputes between the heads of the government branches have intensified despite the Iranian Supreme Leader’s repeated advice and ultimatums that they should keep their differences in check.