Disputes delay U.N. mission to Jenin camp

(CNN) -- A U.N. fact-finding mission to investigate the fighting in the Jenin refugee camp during Israel's military offensive in the West Bank has been held up by several disputes between Israel and the United Nations.

The sticking points include:

IN-DEPTH  CNN NewsPass Video    •  Palestinian politics  MORE STORIES   •  IDF: Arms workshops destroyed in Rafah  EXTRA INFORMATION   •  Gallery: Palestinian fatalities  RESOURCES   •  Victims of terror   •  TIME.com: Orchestrating a common ground

Palestinians have said that Israel carried out a massacre at the Jenin camp, killing some 500 people. Those allegations have not been independently corroborated. Israel has said that "dozens, not hundreds" were killed in intense fighting as its forces attempted to clear out what it called "the fountainhead of suicide bombers."

Aid agency officials said Sunday that 52 bodies have been recovered from the wreckage of the camp. Israel lost 23 soldiers during the fighting, 13 of them in one incident.

Figures compiled by aid agencies show 140 of the camp's 1,896 homes were destroyed, and another 200 were damaged. One-quarter of the camp's population of 13,000 was made homeless.