Israel on Friday accused Hamas of a breach of the cease-fire agreement between the warring sides of the "utmost severity" after DNA testing of four sets of hostage remains returned on Thursday showed one of the bodies was not that of Shiri Bibas as Hamas had claimed.

Hamas released four bodies, including the youngest captive taken in the Oct. 7, 2023, terrorist attack, Kfir Bibas, and his brother.

Hamas originally claimed in November 2023 the three members of the Bibas family had been killed in an Israeli air strike, without providing evidence. The BBC hasn't been able to independently verify this. Israel says it will not confirm their deaths before forensic testing.