The Israeli military ordered the evacuation of many areas and towns around Gaza City on Monday, warning of impending conflict after rockets were launched from the area.

Avichay Adraee, a military spokesman, uploaded a map on social media site X indicating many areas in the Gaza Strip's northwest that will be evacuated, declaring them part of a "dangerous combat zone."

Israel has issued numerous evacuation orders during its war against Gaza rulers Hamas.

The evacuation orders have covered most of Gaza's territory, according to the UN, and include areas where the military had previously said were largely cleared of Palestinian armed groups.

Adraee said Palestinian fighters were "once again firing rockets at the State of Israel" from Gaza's northwest, a focus of Israel's military operations in the early stages of the war.

Earlier Monday the armed wing of Islamic Jihad, a Palestinian group fighting alongside Hamas in Gaza, claimed responsibility for rockets launched at southern Israel.

The military said "two projectiles were identified crossing from northern Gaza into Israeli territory" late Sunday, with one intercepted and the other falling in the sea.

The vast majority of Gaza's 2.4 million people have been displaced at least once during more than 11 months of war, according to the United Nations.

Previous evacuation orders have sent people fleeing entire neighbourhoods or towns with whatever belongings they can carry with them.

Israel's military offensive in Gaza has killed at least 40,972 people, according to the Hamas-run territory's health ministry.

The UN rights office says most of the dead are women and children.