The Israel Air Force targeted a building in the southern Gaza Strip and two smuggling tunnels early Thursday morning, in response to rocket fire into Israeli territory the previous day.
There were no reports of casualties in the attack on the warehouse, which the IDF said was being used to store weapons, though Palestinian sources said the building sustained damage.
In strikes near Rafah, on the Gaza-Egypt border, Palestinians reported that two people working inside smuggling tunnels were lightly wounded.
The IDF confirmed hits in all three strikes.
The operation came after a Kassam rocket fired from the Strip landed near a Sdot Negev kibbutz on Wednesday. No casualties or damage were reported in the attack.
An IDF statement said that Palestinians have fired more than 250 rockets and mortar shells into Israel since the end of Operation Cast Lead in January.
AP contributed to this report