Hamas is expected to hand over to Israel the names of four hostages to be released on Saturday under the Gaza ceasefire deal.
It is believed they will be soldiers and civilians, all female.
They will be freed in exchange for 180 Palestinian prisoners held in Israel.
It will be the second exchange since the ceasefire came into effect last Sunday. Three hostages and 90 prisoners were released in the first swap.
The ceasefire halted the war which began when Hamas attacked Israel on 7 October 2023. About 1,200 people were killed and 251 taken back to Gaza as hostages.
More than 47,200 Palestinians, the majority civilians, have been killed in Israel's offensive, Gaza's Hamas-run health ministry says.
Hamas is also expected to provide information about the remaining 26 hostages due to be released over the next five weeks.
This includes the Bibas family - two parents and two children, one of whom, Kfir, was 10 months old when taken captive and is the youngest hostage. It is unclear if this information will include the names or just the number of living or dead hostages.
