The resumption of heavy Israeli strikes in Gaza raises concerns about the remaining hostages held by Hamas and other groups, with fewer than half of the 59 hostages now believed to be alive according to the Israeli government.

A recent analysis by The New York Times showed that at least 41 hostages died during their captivity by Hamas and its allies. Out of the 251 people seized and taken into Gaza during the Oct. 7, 2023 attacks, 130 or more hostages have been released, and the Israeli military has retrieved the bodies of at least 40 others.

In January, Israel and Hamas agreed to a multi-stage truce that would allow for the exchange of Hamas-captured hostages in Gaza for Palestinian prisoners jailed by Israel.

The first phase of the cease-fire ended in early March, with Hamas releasing 30 Israeli and foreign hostages, as well as handing over eight bodies, in exchange for the Israeli release of over 1,000 Palestinian prisoners. Some hostages had already been rescued or released before the agreement.

The fate of the cease-fire remains unclear following Israel’s resumption of heavy strikes into Gaza on Tuesday, following Hamas’s repeated refusal to release the remaining hostages. Earlier this month, President Trump warned Hamas militants to release the remaining hostages in Gaza or face death.

Hamas accused Israel early Tuesday of overturning the cease-fire, claiming that it exposes the prisoners in Gaza to an unknown fate.