Hamas has fired rockets on the southern Israeli city of Ashkelon after warning people to leave by 17:00 local time (15:00 BST).
Air raid sirens have been sounded across Israel throughout the day – the military says more than 4,500 rockets have been fired since Saturday.
Israel said it’s killed two top Hamas officials while continuing to bomb the Gaza Strip; the group itself has not confirmed this.
A BBC reporter in Gaza said it was the worst bombing he had seen in 20 years, with neighbourhoods flattened.
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