The International Committee of the Red Cross (ICRC) in eastern Afghanistan, was attacked in the second major assault on humanitarian organisations in less than a week.
Seven staff members, all of whom were foreign workers at the ICRC, were rescued by the Afghan police during the attack.
This is attack is the first of its kind on the strictly neutral ICRC in Afghanistan, since the start of the organisation's mission in 1987.
There have been no claims of responsibility for the attack, though the attack comes a week after Taliban insurgents attacked the office of the International Organisation for Migration, resulting in the death of four foreign aid workers.