Israel said Hamas released 16 hostages in the final hours of a truce that negotiators are trying to extend in hopes of securing the freedom of the remaining women and children still being held by militants in Gaza.

Ten Israelis, including one who is also a U.S. citizen, were released as part of the soon-to expire deal. Four Thai nationals and two Israeli-Russian citizens were also released, but they aren’t considered to be covered by the existing deal. In exchange, 30 Palestinians who had been imprisoned were freed under the truce deal, the Israeli prison service said.