Jerusalem (CNN) -- Palestinian Authority President Mahmoud Abbas lashed out Monday at Al-Jazeera, calling the Arabic TV network's release of alleged secret documents from Israeli-Palestinian peace negotiations "shameful." "The report aired by Al-Jazeera is an intentional mixing between the many Israeli proposals and the Palestinian positions," Abbas said in Cairo, Egypt, in comments published by the Palestinian news agency Wafa. "We do not have anything secret to hide," he added. "All our negotiations and meetings and every issue discussed were presented to Arab countries with documents." Dozens of Palestinians gathered Monday in central Ramallah, burning banners for Al-Jazeera and holding posters comparing the channel to Israel, Wafa reported.
@highlight
NEW: Palestinians protest and burn Al-Jazeera banners
@highlight
NEW: Middle East negotiator Tony Blair of Britain calls the report "absurd"
@highlight
The Palestinian Authority president calls Al-Jazeera's report "shameful"
@highlight
The Chief Palestinian negotiator calls some allegations "patently false"
Former British Prime Minister Tony Blair, a representative for the @placeholder, told CNN he does not believe Abbas would offer as much territory as the documents suggest.
"Those negotiators have no credibility and they are not authorized to negotiate on behalf of the @placeholder because of the division, because there is no united Palestinian institution and because they don't have cards of power to negotiate with the Israelis."