The Palestinian Hamas movement said Monday that it would not end hostilities with Israel without concessions and that no serious efforts towards a truce had been made.
"Talk of a ceasefire requires real and serious efforts, which we haven't seen so far," Hamas legislative member Mushir al-Masri told AFP in Gaza City.
Masri said Hamas would only negotiate on the basis of a set of concessions it wants to see Israel agree to.
Those include the lifting of Israel's blockade on the Gaza Strip, the opening of the Rafah border crossing with Egypt and the release of Palestinian prisoners Israel has rearrested after freeing them in exchange for kidnapped Israeli soldier Gilad Shalit.
"Any ceasefire must be based on the conditions we have outlined, nothing less than that will be accepted," Masri said.
In Cairo, a Hamas official said a general framework had been agreed, and that the group was committed to achieving more than it did in the truce deal that ended the last major round of violence with Israel in 2012.
"We need to build on the 2012 truce and move forward. We don't want to go back," he said.
Masri said that "Arab countries and Islamic countries and Western countries" were involved in discussions about a truce, but declined to give details.
He said Hamas was prepared to continue fighting and ready for a "long, drawn-out battle."
The fighting entered its seventh day on Monday, with international pressure for a truce growing, but no sign of a concrete mediation channel or formula to end hostilities that have killed more than 170 people in Gaza.