Israeli Prime Minister Benjamin Netanyahu has accused Hamas militants of violating the ceasefire deal by handing over the body of a woman from Gaza instead of Israeli hostage Shiri Bibas, the mother of two young boys whose bodies were returned a day earlier along with a hostage in his 80s.

Hamas said Tuesday that it would hand over all six living Israeli hostages due for release under the first phase of the Gaza ceasefire this week, as well as the bodies of four dead captives.The fragile Gaza truce took effect on January 19 after more than 15 months of fighting between Israel and Hamas,

Hamas is set to free six more Israeli hostages Saturday from the Gaza Strip, but the exchange for hundreds of Palestinian prisoners is shadowed by heightened tension between the adversaries that clouds the future of the fragile ceasefire deal.