"There were two rockets that were fired in the general direction of one of the kibbutzim," police spokesman Micky Rosenfeld told AFP, without reporting damage or injuries.
Earlier an unspecified "projectile" was fired from Gaza into southern Israel, also causing no casualties, the Israeli military said.
Israeli jets bombed three sites in Gaza on Wednesday night in response to rocket fire from the coastal strip earlier the same day, Palestinian officials and the military said.
The airstrikes were the second in as many days, as rocket fire from Gaza into Israel increased after months of relative quiet.
The military said its aircraft targeted three tunnels, two used for smuggling in southern Gaza and one "used for terrorist activity" in the north of the Palestinian territory.
"The tunnels were targeted in response to the firing of rockets at Israel`s southern communities during the previous day," the military said.
Palestinian medical sources said five people were moderately wounded in the strikes and two people were reported missing.
The Israeli strikes overnight came after similar air raids a day earlier. (*)
Editor: Kunto Wibisono
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