Frechette offered her resignation but Annan declined to accept it, saying she did not bear personal responsibility for the lapses.
The announcements came today as the UN released the report of an independent panel into accountability for security failures in Baghdad. The 19 August attack was the worst ever against UN facilities, killing 22 people, including UN special envoy Sergio Vieira de Mello.
The attack caused a pullout of hundreds of UN international staff from Iraq. The organization is now exploring a return to assist in Iraq's political transition.