A man being questioned in connection with last Sunday's devastating bombings targeting Iraqi ministries grabbed a gun from a guard and fatally shot a senior investigator, Iraqi officials said Sunday. The investigator, Maj. Arkan Hachim, returned fire after he was wounded. The suspect was also fatally shot, according to a statement issued by the Ministry of Interior. Ministry officials acknowledged that the incident showed "a dereliction," and they vowed to "investigate the matters behind this incident."