The Iraqi authorities suspect the explosion to a deputy in parliament.

Law enforcement agencies in Iraq have issued a warrant for the arrest of the deputy local parliament, Mohammed Al-Daina (Mohammed al-Daini), suspected of organizing a series of attacks in the country, including - the explosion in the building of Parliament in 2007. This reports Reuters.
To ensure the legality of the arrest of Iraq's parliament had been sent the request to the request to deprive al-Daina immunity.
The reason to initiate an investigation with respect to the MP was the recognition of his bodyguards, who were detained earlier in the case. According to them, al-Daina decided to make the attack as revenge for the murder of 11 of his bodyguards. The MP appealed to the radical groups, ordering them to kill at least one hundred people - ten men for each deceased employee protection.
In addition, detainees told the guards deputy, in order to get inside the parliament building, the Executive used the pass attack al-Daina. Having passed this way in the building, suicide, and brought a bomb, they stressed.
Sam Al-Daina categorically rejected accusations of involvement in the attack. Commenting on the actions of the authorities, the deputy stated that they have every right to do what you want, but it also has the right to express their views on what is happening. He also condemned the detention of his guards, calling such actions illegal.
The explosion in the Iraqi parliament took place 12 April 2007. As a result of the terrorist attack killed one deputy, even at least 22 people were injured. Responsibility for the bombing have taken the armed factions led by Al-Qaeda. "