The remains of three people handed over by Hamas to the Red Cross this week do not belong to any of the hostages, Israel said Saturday, the latest setback that could undermine a U.S.-brokered ceasefire in the Israel-Hamas war.

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The handover followed Israel's return on Friday of the bodies of 30 Palestinians to Gaza. That completed an exchange after militants earlier this week turned over remains of two hostages, a sign that the tense Israel-Hamas ceasefire agreement was edging forward.

The unidentified remains of the three people were returned late Friday to Israel, where they were being examined overnight. At the time, a military official warned that Israeli intelligence suggested they did not belong to any of the hostages taken

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