The Hamas-run health ministry in Gaza says an Israeli raid on a refugee camp - which led to the rescue of four hostages - killed 274 people, including children and other civilians.

On Saturday, Israel's forces, backed by air strikes, fought intense gun battles with Hamas in and around the Nuseirat refugee camp, freeing the captives.

Noa Argamani, 26, Almog Meir Jan, 22, Andrei Kozlov, 27, and Shlomi Ziv, 41, who were abducted from the Nova music festival on 7 October have been returned to Israel.

The Israeli military has estimated that fewer than 100 people died in the operation.

But the latest figures from the Hamas-run health ministry in Gaza would, if confirmed, make it one of the deadliest days of the conflict so far.

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