The Israeli military said two rockets were fired into Israel from the Gaza Strip on Saturday.
The rockets set off warning sirens in the community of Kissufim, which borders the Hamas-controlled enclave, but there were no reports of casualties or damage.
Earlier in the day, a suspected explosive device attached to a cluster of balloons was discovered by tourists at Kissufim Forest, also near the Israeli border with Gaza.
Police sappers were called to the scene.
Israeli tourists have flocked the area in recent days for the Darom Adom Festival, the Anemone flower's blossoming season.
Palestinian militants in Gaza have fired a number of rockets and explosive balloons into Israel in recent weeks as tensions have risen following the Jan. 28 release of the Trump administration’s Mideast initiative, which the Palestininas believe strongly favors Israel.
The Islamic militant group Hamas, which seized power in Gaza from rival Palestinian forces in 2007, has largely observed an informal cease-fire with Israel as Egyptian and U.N. mediators have tried to bring about a more lasting truce.
Hamas has curbed rocket fire in exchange for the easing of a blockade imposed on Gaza by Israel and Egypt after the militants seized power.
Israel holds Hamas responsible for all rocket fire from the Gaza Strip, even attacks claimed by other factions. It often responds by striking militant infrastructure.
There have been several such exchanges in recent weeks, with no casualties on either side.