(JNS) While Israeli security officials have requested that the four hostages rescued by the Israel Defense Forces on Saturday keep their experiences secret, some details have nevertheless emerged.

The four—Noa Argamani, 26, Almog Meir Jan, 21, Andrey Kozlov, 27, and Shlomi Ziv, 40—appeared to be in good health when first seen on camera on June 8, the day of the raid.

But two days later, Dr. Itay Pessach of the Sheba Medical Center revealed they were in a “state of severe malnutrition.”