Israel and Hamas were expected to swap more hostages for Palestinian prisoners on Saturday, the second such exchange since a ceasefire began in the Gaza Strip last weekend and another test for the deal.

Mediators say Israel and Hamas have reached a ceasefire agreement following weeks of negotiations, pausing a destructive 15-month war in Gaza. But Israeli Prime Minister Benjamin Netanyahu says details have yet to be finalized.

Officials representing Israel and Hamas said today that the two sides had agreed to a 42-day cease-fire that would coincide with the release of Israeli hostages who have been held captive in Gaza. The final details are still being worked out, but the tentative agreement raised hopes that there could soon be an end to the war.