Israel identified the remains of child hostages but said another body from Hamas was not their mother as claimed. And near Tel Aviv, explosions hit threes buses, but no injuries were reported.
Today's release is the first time Hamas has handed over the bodies of hostages during the war, although several have been recovered by Israeli forces in Gaza and returned to Israel.
After meetings in Israel, Secretary of State Marco Rubio is in Saudi Arabia to push President Trump's plan for Gaza and to meet with Russian counterparts on steps to ending the war in Ukraine.
NPR traveled with Jordan's military on a recent helicopter flight delivering aid to the Gaza Strip, part of a test program since the ceasefire between Israel and Hamas went into effect last month.
Hamas says it will release three hostages on Saturday, resolving a dispute with Israel that threatened to derail the ceasefire. In exchange, Israel will free dozens of Palestinians from jail.
Israeli Prime Minister Benjamin Netanyahu threatened to resume hostilities unless Hamas releases hostages under a ceasefire agreement on Saturday. Hamas said Monday it is delaying the hostage release.
Hamas is delaying the release of the next group of Israeli hostages, accusing Israel of preventing aid and Palestinians from returning home in Gaza. Israel said Hamas is violating the ceasefire.
Most Gaza residents are the descendants of Palestinian refugees driven to the enclave in a 1948 war. They harbor a deep fear of being uprooted again, and President Trump's remarks struck a raw nerve.
It wasn't immediately clear what legal authority Trump would have to execute his proposals, and they would likely be met by fierce resistance from Palestinians and from regional Arab countries.
Israeli Prime Minister Benjamin Netanyahu will be the first foreign leader to visit the White House since President Trump's return to office, in a crucial meeting for the future of the Middle East.
Siegel is the first American to be released as part of this deal. A total of 18 hostages have been released since the ceasefire took effect. Hundreds of Palestinians have been released so far.