Israeli Prime Minister Benjamin Netanyahu says a body that Hamas militants released during the handover of remains of Israeli hostages is that of a woman from Gaza instead of that of Shiri Bibas, the mother of two young boys whose bodies were returned on Thursday.

The armed wing of militant group Hamas said on Friday it will release Israeli hostages Eliya Cohen, Omer Shem Tov, Tal Shoham, Omer Wenkert, Hisham al-Sayed and Avera Mengisto on Saturday.

In what was set to be the largest swap under January’s ceasefire agreement, six hostages were freed, but the release of some 600 Palestinian prisoners was delayed. It comes after Shiri Bibas’s body was returned by Hamas.