Palestinians in northern Gaza described heavy Israeli bombardment Saturday in the hours after airstrikes killed at least 22 people, as Israel continued to tell people there and in southern Lebanon to get out of the way of its offensives against the Hamas and Hezbollah militant groups.

An Israeli strike on a school sheltering the displaced in the Gaza Strip killed at least 27 people, including a child and seven women, Palestinian officials said Thursday, as Israel continues to strike at what it says are militant targets across Gaza.

In the past year in the Gaza Strip, Israel has bombed more than 40,000 targets, found 4,700 tunnel shafts and destroyed 1,000 rocket launcher sites, the military said on Monday's one-year anniversary of the Hamas-led militant attacks that triggered Israel's assault on the enclave.