Nantucket, Massachusetts - A four-year-old American girl is safely in Israel after being released Sunday from captivity in Gaza, President Joe Biden said as he urged the pause in Israel-Gaza fighting be extended to allow for more hostage releases.

"She's free, and she's in Israel now," Biden told reporters shortly after the Israeli army announced that 17 hostages were being freed by Hamas.

"She's been through a terrible trauma," Biden said of Abigail, whose parents were murdered by Hamas militants when members of the Islamist group attacked Israel on October 7. On Friday in captivity, she marked her fourth birthday, the president said.

"Today, she's free, and Jill [Biden] and I, together with so many Americans, are praying for the fact that she is going to be alright," he said.

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"She is now safely in Israel, and we continue to press and expect additional Americans will be released as well. And we will not stop working until every hostage is returned to their loved ones."

The White House has said that 10 Americans — seven men, two women, and Abigail — were missing and presumed held hostage by Hamas.

Questioned by reporters about when other US citizens might be released, Biden — speaking from Massachusetts, where he was wrapping up a Thanksgiving break — said: "I don't have anything firmly to tell you at this moment."

Biden said a total of 58 hostages had been released by Hamas during the current temporary halt in fighting through what he called "intensive US diplomacy" by himself and administration officials working with Israel, Qatar, Egypt, and others.

The president said he hoped to see the pause extended.

"That's my goal, that's our goal, to keep this pause going beyond tomorrow so that we can continue to see more hostages come out and surge more humanitarian relief into those in need in Gaza," Biden said.

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Asked for how long he would like to see a pause in fighting, he said: "As long as prisoners keep coming out."

"I get a sense that all the players in the region are looking for a way to end this so the hostages are all released and... Hamas is completely no longer in control of Gaza."

He also pointed to the humanitarian benefits of the break in fighting, saying hundreds of aid trucks have been able to enter the besieged Gaza Strip, providing much-needed food, water, medicine, and fuel.

The three-day-old truce "is delivering live-saving results," Biden added. "Critically needed aid is going in, and hostages are coming out."

Senator Thom Tillis, a Republican, said without mentioning Biden that it was "a great relief" Abigail was released. But he noted that a native of Tillis's state of North Carolina, Keith Siegel, remained captive by Hamas.

"It is time for Keith and all other hostages to be immediately released," Tillis said on X, the former Twitter.