Dozens of people have been reported killed by overnight Israeli air strikes in the Gazan cities of Khan Younis, Rafah and Deir al-Balah.
The cities are in the southern part of the Gaza Strip, where civilians have been advised to move by Israel's military.
The Israel Defense Forces have not commented on the strikes - but said they took control of a Hamas stronghold in northern Gaza in recent fighting.
They also said they struck "dozens of Hamas mortar shell launchers" overnight, and attacked Hamas targets from the sea.
In Israel, people across the country are marking one month since the Hamas attacks on 7 October, which saw 1,400 people, mostly civilians, killed in their communities.
More than 200 others were kidnapped and taken to Gaza to be held as hostages.
Israel says its strikes and ground offensive in Gaza will destroy Hamas and the threat it poses; it says it works to minimise civilian casualties.
More than 10,300 people have been killed in Gaza according to the Hamas-run health ministry, including more than 4,100 children
