Fierce Israeli tank fire and air strikes have been continuing in Khan Younis in southern Gaza, which Israel sees as a stronghold of Hamas.
Residents have reported intense gun battles between Israeli troops and Hamas fighters there.
The Israeli army says it's struck targets across Gaza over the past 24 hours, and its troops have killed "dozens of terrorists" in Gaza City.
As Israeli ground operations drive tens of thousands of people to flee, there are reports of an increased spread of diseases.
The UN has complained that the volume of aid reaching the territory remains "woefully inadequate".
Israel insists it’s not limiting it and that the problem is with its distribution.
At least 1,200 people were killed when Hamas militants attacked Israel on 7 October and about 240 others were taken hostage.
The Hamas-run health ministry in Gaza says more than 21,500 people have been killed in Gaza since Israel started its retaliatory campaign
