In an Oct. 7 cross-border attack, Hamas militants killed 1,200 people and seized 240 hostages, according to Israeli tallies.
While the deal was brokered by Qatar, the U.S., and Egypt, the handover of hostages and Palestinian detainees was facilitated by the Red Cross.
The released hostages said in their letter that they had endured "harsh conditions" while being held and asked the Red Cross to help secure the immediate release of those still in captivity.
They also asked the Red Cross to make visits to verify the health status of the captives, and provide medical assistance and proof of life which they said was urgent.
The Red Cross has not commented on the letter, but it has previously called for agreements to allow its teams to check on hostages and deliver medication.
Persons:
Abu Mustafa, Emily Rose, Rosalba O'Brien
Organizations:
REUTERS, Rights, International Committee, Cross, Thomson
Locations:
Israel, Rafah, Gaza, Qatar, U.S, Egypt