Hamas released six hostages from Gaza on Saturday. Israel was due to release 620 Palestinian detainees in return, but has delayed the exchange citing further security reviews.

In what was set to be the largest swap under January’s ceasefire agreement, six hostages were freed, but the release of some 600 Palestinian prisoners was delayed. It comes after Shiri Bibas’s body was returned by Hamas.

By bnm Tel Aviv bureau Omer Shem Tov, Omer Wenkert, and Eliya Cohen arrived safely with the International Committee of the Red Cross (ICRC), according to reports from Israel’s N12 on February 22. The three men were released following a hostage exchange ceremony conducted by Hamas in Nuseirat,