Israeli sappers on Saturday recovered the debris of two rockets fired into the south of the Jewish state, a military spokesman said.
"Soldiers have found on Saturday the remains of a rocket, apparently a Grad, near the town of Mitzpe Ramon," said the spokesman without specifying from where the rocket was fired.
Earlier on Saturday, the spokesman had said debris of another rocket fired late Friday was found.
"Last night, an explosion in the Arava valley was heard, and this morning we recovered the remains of a device we have now identified as a Grad-type rocket," the spokesman told AFP.
"An investigation into the attack has now begun."
Television quoted military sources as saying said both rockets had been fired from the desert in Egypt's Sinai Peninsula.
The desert Arava region extends from the south of the Dead Sea to the Red Sea resort city of Eilat.
A Grad rocket exploded near Eilat at the beginning of April, without causing any casualties, and another unexploded Grad was later found in the same area.