Shiri Bibas, an Israeli woman, and her two young children, Ariel and Kfir, were said to be among those returned. A senior U.N. official called the Hamas display “abhorrent and cruel.”

Hamas displayed coffins that it said held the bodies of four Israeli hostages before a crowd of militants while handing them over to Israel on Thursday, in a spectacle that included taunts and anti-Israel slogans.

Members of the Bibas family — a mother and her two children, who were 4 years and 8½ months old when they were taken — are expected in the release.