Iraqi authorities have arrested a suspect in the attempted assassination of Shi'ite Vice President Adel Abdul-Mahdi, an aide said Tuesday. The aide said the arrest was made after reviewing security camera video from Monday's blast, which ripped through an awards ceremony at the ministry of public works and killed at least 10 people. Abdul-Mahdi received leg injuries and was briefly hospitalized. The aide declined to give any further details about the arrest or the suspect. He spoke on condition of anonymity because he was not authorized to brief the media. He said the bomb was planted under a chair in the first row of the meeting hall - about two meters (six feet) from the vice president. Police initially thought the bomb was hidden under a speakers' podium.