Report: Palestinians agreed to give up most of East Jerusalem From Kevin Flower, CNN January 24, 2011 -- Updated 0907 GMT (1707 HKT) Palestinian documents leaked STORY HIGHLIGHTS NEW: Hamas accuses the Palestinian Authority of working against Palestinian interests Al-Jazeera: It has nearly 1,700 leaked documents related to the Israeli-Palestinian conflict Palestinians offered compromises on sensitive issues, the documents show The leak could prove politically damaging for Palestinian Authority President Abbas RELATED TOPICS Jerusalem Israel Al Jazeera Satellite Channel Mahmoud Abbas Hamas Jerusalem (CNN) -- Palestinian negotiators agreed to give up large areas of East Jerusalem to Israel during negotiations dating back to 2008, the Al-Jazeera network said Sunday, suggesting Palestinian leaders have been willing to offer much larger concessions in private than they had previously acknowledged in public. The Sunday report was based on a trove of nearly 1,700 internal documents the network said it had obtained. Al-Jazeera did not disclose the source of the material, nor did it say how the documents came into its possession. It said it will be releasing what it has between Sunday and Wednesday of this week. The papers, some of which were posted on the network's website, shed new light on the details of the Israeli-Palestinian conflict from 1999 through last year. They could not be immediately verified by CNN. The documents outline meetings between Israeli, Palestinian and U.S. officials in which Palestinian negotiators offered in 2008 to relinquish claims on nearly all of the settlements built in East Jerusalem. Read the Al-Jazeera story The offer was flatly rejected by the Israeli side, according to the posted documents. Israel seized the eastern half of the city following war with its Arab neighbors in 1967 and considers Jerusalem its sovereign capital. This is a claim rejected by the international community which considers Israeli building in East Jerusalem to be illegal. Palestinians want the eastern part of the city as the capital for their future state. The leaked documents could prove to be politically damaging for Palestinian Authority President Mahmoud Abbas. Officials from the Ramallah-based government have consistently condemned growing Israeli settlements in East Jerusalem and disclosures that Palestinians officials were willing to make offers that would allow Israeli construction to continue are likely to be seized on by their critics. The Hamas militant group, which rules the Palestinian territory of Gaza, condemned the Palestinian Authority team, saying it "does not have credibility to negotiate because it offered essential concessions." The Palestinian Authority rules in the West Bank. "All the doubts and all the concerns of the Palestinian people and the resistance were true," Oussama Hamdan, head of Hamas foreign relations, said Monday in a CNN interview from Lebanon. "Those negotiators have no credibility and they are not authorized to negotiate on behalf of the Palestinians because of the division, because there is no united Palestinian institutions and because they don't have cards of power to negotiate with the Israelis." Sami Abu Zhuri, a Hamas spokesman in Gaza, said the leaked internal documents about Palestinian concessions on East Jerusalem illustrate the collaboration between the Palestinian Authority and Israel. He accused the Abbas government of working with Jerusalem to put an end to the notion of a Palestinian state. Hamas, which refuses to recognize Israel's right to exist, has been branded a terrorist organization by the United States and the European Union. In one leaked document from 2010, Chief Palestinian negotiator Saeb Erekat is quoted as telling a U.S. State Department official, "Israelis want the two-state solution but they don't trust. They want it more than you think, sometimes more than the Palestinians. What is in that paper (that) gives them the biggest (Jerusalem) in Jewish history ... what more can I give?" In addition to details about concessions made on the issue of East Jerusalem, Al-Jazeera reported that Palestinian officials also offered compromise positions on sensitive issues like the right of return of Palestinian refugees and control of the Temple Mount, which houses the Al-Aqsa mosque, one of the most important sites in Islam. Wafa, the Palestinian Authority's news agency, quoted President Abbas telling newspaper editors in Cairo Sunday that he did not know where Al-Jazeera got its information and that there was nothing new to report. U.S. State Department spokesman P.J. Crowley said Sunday night the United States is looking into the purported leak to Al-Jazeera. "The U.S. government is reviewing the alleged Palestinian documents released by Al-Jazeera. We cannot vouch for their veracity," he tweeted. CNN's Nic Robertson, Talal Abu Rahma and Nada Husseini contributed to this report.