Hamas has handed over the bodies of four Israeli hostages, said to include a mother and her two children who have long been feared dead.

TEL AVIV, Israel (AP) — The Israeli military said Friday it had positively identified the remains of two young hostages, but a third body released by Hamas under a ceasefire deal was not the boys’ mother as the militant group had promised.

The revelation was a shocking twist in the saga surrounding the Bibas family, who have become global symbols of the plight of Israeli hostages held by Hamas, and threw the future of the fragile ceasefire into question.