Israel has tightened travel curbs in the Gaza Strip on the day after rockets were fired on a town near Prime Minister Ariel Sharon's ranch.
The Israeli army said it was limiting Palestinian travel in the Gaza Strip as part of "the continuing fight against terror and in response to yesterday's Qassam rocket attack".
Crude Qassam rockets launched from the Gaza Strip hit the southern town of Sderot, near Mr Sharon's desert ranch, on Wednesday, wounding three people.
Army roadblocks in Gaza split the strip into three sectors. Hundreds of Palestinians cut off from their homes or work in Gaza City reached their destinations by walking along a beach.
Palestinians say Israeli travel restrictions are collective punishment. The curbs were imposed after Wednesday's army raids that killed 11 Palestinians, including two gunmen and four security officers.
In the latest violence yesterday, Israeli troops killed three Palestinians, raising the Palestinian death toll from army operations to at least 28 since Islamic militants blew up an Israeli tank on Saturday, killing its four crewmen.
The violence threatened new efforts to arrange a ceasefire in a Palestinian uprising that began in September 2000 after the collapse of talks on a Palestinian state in the territories Israel occupied in the 1967 Middle East war.
Mr Sharon has said Palestinian violence must stop before negotiations can resume on a permanent Palestinian state. Palestinian officials say violence is unlikely to subside until the Israeli army pulls back from cities under self-rule.
At least 1,857 Palestinians and 705 Israelis have been killed since the uprising began.