Two rockets fired from Egypt's Sinai peninsula landed in Israel on Monday.
The projectiles landed on open ground in the Negev desert and no one was injured, an army spokeswoman said in Tel Aviv.
Five members of the Egyptian branch of the terrorist militia Islamic State were killed in an Israeli airstrike in northern Sinai, the group said late Sunday.
They had been travelling in a vehicle near Rafah, it said. It was initially not possible to verify the authenticity of the statement, which appeared on jihadist websites.
Neither Israel nor Egypt wished to comment on reports about the airstrike.
A rocket attack around two weeks ago on the Israeli costal city of Eilat was claimed by the Egyptian branch of Islamic State.
There have been repeated clashes between the group and the military in the north of the Sinai peninsula.