A spokesperson for the Israel Defence Forces (IDF) said: "Hamas violated the operational pause and in addition fired towards Israeli territory."

Israeli Prime Minister Benjamin Netanyahu's office added that Hamas did not agree to release all women hostages, infringing on the terms of the truce, and also launched rockets at Israel.

"With the resumption of fighting we emphasise: The Israeli government is committed to achieving the goals of the war - to free our hostages, to eliminate Hamas, and to ensure that Gaza will never pose a threat to the residents of Israel," it said in a statement.

Around 30 minutes after the ceasefire ended, the Israeli military said its fighter jets were striking Hamas targets in the Gaza Strip.

Israel-Gaza latest: Follow live

Airstrikes hit southern Gaza, including the community of Abassan, east of the town of Khan Younis, the interior ministry in the Hamas-run territory said.

Another strike hit a home northwest of Gaza City.

Images on social media also showed large plumes of dark smoke rising over the densely built-up Jabalia refugee camp.

IDF spokesperson Daniel Hagari said multiple rockets had been launched from Gaza towards Israel.

The IDF added that sirens sounded in three Israeli communities near Gaza; Kibbutz Holit, Sufa, and Nir Yitzhak.

The ceasefire expired at 7am local time (5am UK time) on Friday - with the IDF saying it was "ready" and willing to continue military operations.

A total of 79 Israeli hostages have been released by Hamas over seven consecutive days, with hundreds of Palestinians freed from prisons in exchange.

About 140 hostages remain in Gaza.

International mediators - including diplomats from Qatar, Egypt and the US - had been working to extend the temporary truce.

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But reaching agreements on hostage releases appeared to be getting harder as most women and children had already been released.

On Thursday, US secretary of state, Antony Blinken, met with Mr Netanyahu and other top officials, where he expressed hope that the ceasefire could be extended.

Mr Blinken said that if Israel resumed the war, it must do so in "compliance with international humanitarian law" and must have "a clear plan in place" to protect civilians.

Israel has said its objective is to annihilate Hamas, which rules Gaza, in response to the rampage by the group on 7 October, when Israel says 1,200 people were killed and 240 were taken hostage.

In Israel's subsequent bombardment of Gaza, more than 13,300 Palestinians have been killed - around two-thirds of them women and children - according to the Hamas-run health ministry.