DEIR AL-BALAH, Gaza Strip — Israel turned over the bodies of 15 Palestinians on Thursday, just days after recovering the remains of the last Israeli hostage, a Gaza Health Ministry official said.

It marks the last hostage-detainee exchange between Israel and Hamas carried out as part of the first phase of the U.S.-brokered ceasefire reached in October. The Red Cross said that it helped facilitate the return of the bodies. They were taken to Shifa Hospital in Gaza City, health ministry spokeperson Zaher al-Wahidi said.

The return of all remaining hostages, living or dead, had been a key part of the first phase in the ceasefire that paused the war.

Israel agreed to return 15 Palestinian bodies for each hostage recovered, according to the ceasefire terms. It’s unclear if the bodies released Thursday were of Palestinian detainees who died in Israeli custody or bodies taken from Gaza by Israeli troops during the war.

Israel has released roughly 2,000 Palestinian prisoners under the ceasefire deal, many of whom were seized by Israeli troops during the more than two-year war and held without being charged. It also has released the bodies of 360 Palestinians back to Gaza, where officials have struggled to identify them.

The Gaza health ministry, part of the Hamas-run government, has posted photos of the deceased for families to identify. Of the bodies handed back by Israel, about 100 have been identified by families, al-Wahidi said.

On Monday, Israel announced that it found and identified the remains of the last Israeli hostage, police officer Ran Gvili, following an extensive search at a cemetery in northern Gaza.

The attack by Hamas-led militants on Israel on Oct. 7, 2023, which launched the war, killed about 1,200 people and saw 251 taken hostage. Gvili, a 24-year-old police officer known affectionately as “Rani,” was killed while fighting Hamas militants.