A Kassam rocket fired from the Gaza Strip at Israel on Friday morning hit a house in the southern city of Sderot, causing major damage to its roof. An adjacent house was also damaged, and one woman was treated for shock.

A second rocket, fired simultaneously, landed in an open area and caused no damage or injuries.

Red Alert sirens sounded throughout the area ahead of the explosion.

The first Kassam went through the roof of the Afflelu family’s home and penetrated through to the first floor apartment in the building next door. The second building had suffered a direct hit from a rocket in 2007, and had been rebuilt with a safety room, which was used Friday by the Timsit family.

The Afflelus had also entered their safety room just ahead of the blast, and members of both families survived the attack uninjured.

Earlier on Friday, two rockets landed in open areas in the Hof Ashkelon Regional Council, just north of Sderot.

Friday’s attacks were the most recent in a week where rocket fire from Gaza terrorized residents of southern Israel, as children were returning to school following summer vacation.

On Sunday, three Kassam rockets were fired at Sderot, two of them hitting factories in the city’s industrial zone. The blasts injured two people and structural damage was caused to one factory.

Three more bombs were fired from the Strip at southern Israel on Monday, causing no injuries or damage. And two more rockets and a mortar shell were fired into the Eshkol region, in the Western Negev, on Tuesday evening, all landing in open areas.

Michal Shmulovich contributed to this report.