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.

Hamas on Saturday released the last six living hostages expected under the first phase of its ceasefire with Israel with a week remaining, as questions over the next phase clouded the deal 's future.

The six Israelis were the last living captives set to be released in the first phase of the cease-fire. The agreement, strained for weeks, has an uncertain future.