Israel has pledged a full inquiry into the killing of UN worker in the West Bank last week in response to a demand for action by the United Nations.
UN Secretary General Kofi Annan wrote to Israeli Prime Minister Ariel Sharon, saying he "expected Israel to carry out a rigorous investigation of the incident, share its results with the United Nations and hold accountable those responsible".
Israeli officials were not immediately available for comment today, but they have said an inquiry is under way into last week's killing of British aid worker Mr Iain Hook during a clash with Palestinian gunmen in the West Bank city of Jenin. An Irish woman working for the UN was also hurt.
Israel has said a preliminary inquiry showed that Mr Hook was killed by mistake, when troops took aim at gunmen shooting from inside the compound of the U.N. Relief and Works Agency (UNRWA). But UN officials said there were no gunmen inside the building.
Elsewhere in the West Bank, Israeli forces arrested a suspected commander of a militant offshoot of Palestinian President Yasser Arafat's Fatah faction which claimed responsibility for a shooting attack in northern Israel which killed six people this week.
Palestinian sources said Israeli troops caught Mr Majid al-Masri, the commander of the Al-Aqsa Martyrs Brigades in the northern West Bank city of Nablus, and his assistant in a safe house during a search of the nearby town of Rafidiyeh yesterday.