Leaked documents detailing peace talks between Israel and the Palestinians deliberately confuse the positions of either side, Palestinian President Mahmoud Abbas said on Monday.

The documents, obtained by Al-Jazeera television channel, indicate that Palestinian negotiators offered Israel much bigger concessions than previously revealed.

"What is intended is a mix-up. I have seen them yesterday present things as Palestinian but they were Israeli... This is therefore intentional," Abbas said in Cairo. He said the peace talks were carried out in an open manner.