Hamas says it will delay the further release of hostages in the Gaza Strip after accusing Israel of violating a fragile ceasefire that now faces its most serious crisis since it began three weeks ago.

Three more Israeli hostages were freed on Saturday in the fifth round of exchanges between Israel and Hamas, as uncertainty looms over the next stage of the Gaza ceasefire agreement as well as the enclave’s long-term future.

Hamas has released three Israeli hostages in exchange for Palestinian prisoners. Male civilians Eli Sharabi, Ohad Ben Ami and Or Levy looked gaunt as they were led on stage and interviewed by Hamas fighters before their release. In exchange for the freed hostages, 183 prisoners held by Israel were also released on Saturday.

Hamas-led militants released three more hostages, all Israeli civilian men, to the Red Cross on Saturday, and Israel was to free dozens of Palestinian prisoners as part of a fragile agreement that has

The hostages’ emaciated condition and scenes of Hamas forcing them to speak in a staged release ceremony sparked outrage in Israel and could increase the pressure on Prime Minister Benjamin Netanyahu to extend the ceasefire beyond its current six-week phase.