Israel’s military says it has encircled Jabalya, northern Gaza, after seeing signs of Hamas rebuilding, despite nearly a year of fighting and strikes in the territory.

Palestinian officials say an Israeli strike on a mosque in the Gaza Strip has killed at least 19 people. Israel meanwhile intensified its bombardment of northern Gaza and southern Beirut on Sunday in its widening war on Iran-allied militant groups across the region.

The army on Saturday issued new evacuation orders in parts of Nuseirat camp in the central Gaza Strip, just north of Deir al-Balah, forcing hundreds of families to leave their houses. The military statement said its forces aimed to operate against Hamas militants who waged attacks from the territory.