JERUSALEM (AFP) - Egyptian-brokered negotiations on a prisoner swap with Hamas are at a crucial stage and any deal will be decided in days, senior Israeli officials said Sunday as two envoys held talks in Cairo. A special cabinet session on Monday will hear the report of the two envoys and will then make its decision, outgoing Prime Minister Ehud Olmert said at the start of the weekly government meeting. Israeli media said the envoys were carrying an ultimatum from Olmert warning that if Hamas does not agree to a deal by Sunday night, the group will have to deal with the new Israeli government, which is likely to be less flexible. But Hamas insisted it would not give in to "Zionist pressure" and said its demands for the release of hundreds of prisoners have not changed. "We do not have anything new on this issue," Hamas spokesman Fawzi Barhum said. "We are sticking by our conditions and we don't care about the Zionist pressure."