Israeli troops have shot dead a Palestinian militant at a West Bank refugee camp, further straining a fragile cease-fire.
Palestinians say the man killed near Nablus was a member of the militant group Al-Aqsa Martyrs' Brigades.
Militant groups are now discussing whether to continue honoring an informal truce after three Palestinian teenagers were killed in a separate incident Saturday in Gaza.
Thursday, Palestinian leader Mahmoud Abbas ordered the security services to unify under the government. More than a dozen separate security factions now operate independently.
In another development, outgoing World Bank chief James Wolfensohn has been named as a special envoy for the Gaza disengagement. U.S. Secretary of State Condoleezza Rice announced the appointment today on behalf of the so-called Quartet of mediators - the United States, the European Union, the United Nations and Russia.
Mr. Wolfensohn will focus on Palestinian-Israeli coordination on the non-military aspects of the withdrawal and on reviving the Palestinian economy.
Some information for this report provided by AFP and Reuters.