Hamas says talks with Israel about further steps in the Gaza ceasefire deal are conditional on Palestinian prisoners being freed as agreed. Israel said on Sunday it was delaying the release of more than 600 Palestinians in return for six living and four dead hostages who had been freed,

Israel has delayed the release of Palestinian, with the Israeli Prime Minister’s Office stating that the swap will not proceed “until the release of the next hostages is guaranteed.”

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.