Hamas said it fired a barrage of rockets at cities in Israel's south on Sunday in response to Israeli "massacres" of civilians in Gaza.
Israel's military said about 10 projectiles were fired, but most were successfully intercepted. Israel's Channel 12 reported a direct hit in the southern city of Ashkelon.
Israeli emergency services said they were treating one person for shrapnel injuries, and teams were en route to locations of fallen rockets.
Shortly after the rocket firing, the Israeli military posted on X a new evacuation order, instructing residents of several districts in Deir Al-Balah city in the central Gaza Strip to leave their areas, citing earlier rocket firing.
Later, it said it struck the rocket launcher from which projectiles were launched earlier from the Gaza Strip.
Israeli Prime Minister Benjamin Netanyahu, on a flight to Washington for a meeting with US President Donald Trump, was briefed on the rocket attack by his Defense Minister, Israel Katz.
A statement issued by his office said Netanyahu instructed that a "vigorous" response be carried out and approved the continuation of intensive activity by the Israeli military on the enclave.