The husband of Iraqi aid worker Margaret Hassan has asked Islamic militants to return his wife's body to him so that she can, in his words, rest in peace.

Tahseen Hassan spoke Wednesday after the al-Jazeera television network obtained a video that appears to show the murder of Mrs. Hassan.

Britain's Prime Minister Tony Blair called the apparent killing of the British-born humanitarian an abhorrent act. Poul Nielsen, A top European Union Development official, said her abduction and killing make it almost impossible for relief agencies to continue working in Iraq.

Photo courtesy Michael Moore

Mrs. Hassan spent 30 years caring for Iraq's poorest citizens, particularly children. She was the head of the CARE International humanitarian group in Iraq, and a vocal opponent of the U.S.-led invasion. Her abduction last month was widely condemned by Iraqi civilians and Islamic groups.