Israeli forces have crossed into Gaza and shot dead two Palestinians who they say had been trying to plant a bomb on the heavily fortified border.
The Palestinians died in an exchange of fire, after which an explosive device, two rifles and hand grenades were found on the bodies, the military said.
No Palestinian account of the incident near Kerem Shalom crossing has emerged.
Earlier this week a rocket fired from Gaza struck an Israeli town - the first to do so for several weeks.
The Israeli military says there have been close to 200 rocket and mortar strikes on southern Israel since it ended its January operation in the Strip, which it said was aimed at reducing rocket fire.
But the past week has been relatively quiet, with just one rocket and one mortar fired since 14 May.
Since Israel and Hamas, which controls Gaza, declared unilateral ceasefires on 18 January, Israel has carried out several air strikes in response to rocket attacks.
A number of incidents similar to Friday's have also taken place along the border fence between Israel and Gaza.
Palestinian rights groups say at least 1,400 Gazans died during the offensive, while Israel puts the death toll at about 1,200. The two sides differ on how many many were civilians. Thirteen Israelis died during the fighting.