Hamas confirms death of leader Yahya Sinwar

Militants also took 251 people hostage during the attack. Ninety-seven remain in Gaza, including 34 who Israeli officials say are dead.

In his statement, Hayya said Hamas would not release the captives until the war in Gaza ends.

The hostages "will not return... unless the aggression against our people in Gaza stops," the senior Hamas official said.

He called on Israel to withdraw from Gaza and release Palestinian prisoners held in Israeli jails.

Israel's campaign to crush Hamas and bring back the hostages seized by militants has killed 42,500 people in Gaza, the majority civilians, according to data from the health ministry in the Hamas-run territory, figures which the UN considers reliable.

Hayya said the militant group would take strength from Sinwar's killing, which he said has set him among "the leaders and symbols of the movement who preceded him".

-'Resistance'-

In a separate statement, Hamas also confirmed the death of commander Mahmoud Hamdan in "engagement with the occupation army" alongside Sinwar.

Hamas's armed wing vowed, in its own statement, to keep fighting Israel until the "liberation of Palestine", as it mourned the death of the group's chief.

Directing the fighting in the Palestinian territory as its Gaza leader throughout the war, Sinwar was named the movement's overall chief in August, after the death of Hamas's political bureau chief Ismail Haniyeh, who was assassinated in Tehran on July 31.

Sinwar had not been seen in public since the October 7 attack, and Israeli commanders believed he hid in a labyrinthine maze of tunnels that Hamas built under the Gaza Strip over the years.

Lebanon's Iran-backed Hezbollah, also at war with Israel, said in a statement that it offered "its deepest condolences" as it pledged its continued support for Hamas.

In September Israel said it was shifting its military's focus from Gaza to Hamas ally Hezbollah, which has clashed with Israeli forces since the Gaza war began.

Responding to Hamas's confirmation of Sinwar's death, Iran's Foreign Minister Abbas Araghchi said the Hamas leader was an "inspiration for resistance fighters across the region".

A spokesman for Yemen's Iran-backed Huthi rebels also said the group mourned Sinwar, saying "Gaza and the Palestinian cause are destined for victory, no matter how great the sacrifices".