Israeli forces battled Hamas fighters in the narrow alleyways of Jabalia in northern Gaza on Friday in some of the fiercest engagements since they returned to the area a week ago, while in the south militants attacked tanks massing around Rafah, Reuters reports.

Residents said Israeli armour had thrust as far as the market at the heart of Jabalia, the largest of Gaza’s eight historic refugee camps, and that bulldozers were demolishing homes and shops in the path of the advance.

“Tanks and planes are wiping out residential districts and markets, shops, restaurants, everything. It is all happening before the one-eyed world,” Ayman Rajab, a resident of western Jabalia, said via a chat app.

At the southern end of Gaza, thick smoke rose over Rafah, bordering Egypt, where an escalating Israeli assault has sent hundreds of thousands of people fleeing from what was one of the few remaining places of refuge.

“People are terrified and they’re trying to get away,” Jens Laerke, UN humanitarian office spokesperson, said in Geneva, adding that most were following orders to move north towards the coast but that there were no safe routes or destinations.