Aid deliveries have begun moving into the besieged Gaza Strip, two weeks after the militant group Hamas rampaged through southern Israel and Israel responded with airstrikes.

Israel says Hamas has freed two American hostages who had been held in Gaza since the war began Oct. 7. Israeli airstrikes continued to hit southern Gaza, an area swollen by civilians who fled there from the north on Israeli instructions.

The war, which is in its 15th day on Saturday, is the deadliest of five Gaza wars for both sides. The Hamas-run Gaza Health Ministry said Saturday that at least 4,132 people were killed in Gaza and 84 in the occupied West Bank since Oct. 7. Some 14,000 have been wounded in Gaza and more than 1,400 in the West Bank.

More than 1,400 people in Israel have been killed, mostly in the initial attack on Oct. 7 when Hamas militants stormed into Israel. In addition, 203 people were believed captured by Hamas during the incursion and taken into Gaza, the Israeli military has said.