Abu Obeida, the spokesman for the al-Qassam Brigades, Hamas's military wing, accused Israel of systematically violating the ceasefire agreement over the past three weeks and said Saturday's release would be delayed.
Trump said ending the ceasefire that took effect on January 19 would be "Israel's decision," but that he felt it would be "appropriate" to cancel the agreement if the hostages weren't released by his deadline.
Trump said he would move to end the ceasefire between Israel and Hamas if all of the remaining hostages were not released by Saturday.
Under the terms of the ceasefire deal negotiated by the US, Qatar and Egypt, a total of 33 Israeli hostages were to be released during a six-week first phase in exchange for the release of about 2,000 Palestinian prisoners from Israeli jails.
Hamas has issued a defiant response to Donald Trump's threat that "all hell is going to break loose" if all Israeli hostages are not released by Saturday.
