The five Palestinian civilians were hit by shrapnel but their wounds are not life-threatening, the sources said.
One of the strikes targeted a camp used for training by the Ezzedine al-Qaddam Brigades, the armed wing of the Islamist Hamas group that has controlled the Gaza Strip since 2007, Palestinian security officials said.
In a previous raid on Monday jets retaliated to rockets fired on southern Israel following the burial of former prime minister Ariel Sharon at his ranch near the border with Gaza.