TEL AVIV, Israel — Israeli troops shot and killed two armed Palestinian Arabs who breached a border fence around the Gaza Strip and planned to attack a neighboring kibbutz.

Five other Palestinian Arabs and an Israeli Arab were killed in separate incidents over the weekend in Gaza and the West Bank, Palestinian Arab medics and the Israeli army said. Israel carried out an air raid yesterday in Gaza as part of an effort to stop Palestinian Arabs from launching rockets over the border fence.

The border infiltration took place Saturday morning when the two Palestinian Arabs were spotted by Israeli troops headed to the Netiv Haasarah kibbutz, a collective farming settlement north of Gaza, the Israeli army said in a statement.

Three Palestinian Arab militias, including the Popular Resistance Committees, the Al-Aqsa Martyrs Brigades and the National Resistance Brigades, said they sponsored the plan to attack the kibbutz. In pamphlets distributed in Gaza, they said the fighters were killed in a firefight with Israeli soldiers.

The air raid yesterday struck at a rocket launching site in the northern Gaza town of Beit Hanoun, according to medical personnel at the scene, who said no one was injured. The Israeli army confirmed the attack without giving further details.