Tehran, IRNA - The fate of some Israeli captives is tied to the Israeli army's advance in areas of northern Gaza, the spokesperson of the Hamas' military wing, the Al-Qassam Brigades, has said.

The fate of hostages held by Hamas is directly linked to the Israeli army’s advance in certain areas of Gaza, the spokesperson for Hamas' military wing, Abu Ubaida, said in a statement on Telegram on Monday.

Hamas on Monday said the Israel Defense Forces killed or wounded at least 50 people in an air and ground assault on the Nuseirat refugee camp in central Gaza. ABC News’ Ines de La Cuetara reports.

The only ceasefire so far, in November last year, saw the release of about 100 hostages by Hamas and its allies in exchange for 240 Palestinian prisoners held by Israel.