Jerusalem - Gaza militants fired at least 10 rockets toward Israel after an Israeli airstrike destroyed the offices of Hamas leader Ismail Haniyeh, as air raid sirens wailed across southern Israel.

Israeli media report at least 10 missiles fired toward the southern Israeli town of Sderot late Monday. There are no immediate reports of casualties.

The latest escalation of violence began early Monday when a rocket fired from Gaza struck a home in central Israel, wounding seven people. Israel has vowed to respond “forcefully,” raising the prospect of a fourth war between Israel and Gaza’s militant Hamas rulers.

Israel struck targets throughout Gaza late Monday in response to a rocket attack that struck a house and wounded seven people in central Israel.

The Israeli military says it struck a five-story building in Gaza City that “serves the terror organization’s military wing.” The building houses Hamas administrative offices belonging to the organization’s domestic intelligence agency.

An Israeli airstrike destroyed another multi-story building that the military said was a secret Hamas headquarters.

The Gaza Health Ministry says one Palestinian was wounded in an Israeli airstrike.

Col. Ronen Manelis, an Israeli military spokesman, says the Israeli barrage is “expected to continue for hours to come.”