Dozens killed in strikes on Gaza, Hamas claims - as reports say Israel targeted mastermind behind 7 October attack

Israel's military is investigating claims dozens of people have been killed in strikes on Gaza - as a security official says they were targeting the mastermind behind the 7 October attack.

Hamas's media office said at least 100 people were killed or injured in the attack on the southern city of Khan Younis, which hit tents occupied by refugees fleeing the violence.

A map showing the location of Khan Younis in the southern area of the Gaza Strip

The militant group has described the strikes as "a grave escalation" and evidence Israel was not interested in a ceasefire.

An Israeli security official has confirmed the target of the attack was Hamas military chief Mohammed Deif.

He was the secretive commander behind Hamas's surprise attack on Israel last October, which triggered the devastating Gaza conflict.

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