The UN spokesperson in Pakistan said that the move would be for at least six months and would be reevaluated in three months time. The UN has suffered casualties in its operations in Afghanistan and Pakistan.
International staff members are being relocated to safer sites within Afghanistan with 200 going to other duty stations within the region.
No critical humanitarian staff was removed, according to the UN. The attack on the UN personnel at the guest house in Kabul by Taliban militants that killed five and wounded nine came shortly after the UN lost five more members in a terrorist attack against the World Food Programme office in Islamabad.
This year 27 civilian staffers have been killed -- more than half in Afghanistan and Pakistan.
Following the attack, UN Secretary General Ban ki Moon has appealed both to the Security Council and General Assembly to allocate more resources to better protect UN workers in and outside of Kabul.
For the latest relocation in Pakistan, the UN has noted that it will involve the movement of technical staff and members of its international staff but not senior positions and those conducting humanitarian relief work.
Most of the immediate aid work like providing basic facilities for the thousands of internally displaced people from the fighting in the North West Frontier Province in Pakistan is done by the UN's more than 2500 local Pakistani workers.
