A Qassam rocket fired Wednesday from the northern Gaza Strip hit an apartment in the southern city of Sderot, the police said.
Five rockets were fired by gunmen towards Israeli territory since early Wednesday morning.
The apartment and nearby flats were severely damaged and a handful of people were treated for shock.
“The fear is the same fear, regardless of whether it’s one or 10 rockets,” a resident said.
Earlier, two Qassams landed in open areas near Sderot, and two more landed in the Eshkol Regional Council area. The Islamic Jihad’s armed wing, the al-Quds Brigades, and the Popular Resistance Committees claimed responsibility for the attacks.
The attacks come days after Prime Minister Ehud Olmert vowed that Israeli airstrikes against rocket cells and facilities used by terrorists in the Gaza Strip would continue even if rocket attacks cease.
Hamas' exiled politburo Khaled Mashaal adopted a similarly confrontational tone Tuesday, saying his organization would continue firing rockets towards Israel.
Two people have been killed by rocket attacks in Sderot since Hamas broke a ceasefire with Israel along the border with the Gaza Strip two weeks ago.
Over 50 Palestinians, mainly gunmen, were killed in Israeli airstrikes in the Gaza Strip.
Anat Bereshkovsky contributed to the report