Israeli warplanes launched raids against targets in Gaza overnight, Palestinian sources said.

Israeli warplanes launched raids against targets in Gaza overnight, Palestinian security officials said on Saturday.

No one was hurt in the air attacks which struck bases of the Ezzedine al-Qassam Brigade - the military wing of the Palestinian Resistance movement Hamas which rules Gaza - in Gaza City and east of it, one source said.

A military spokeswoman confirmed the raids and said warplanes struck "targets of a terrorist organization" in response to "two rockets fired on Ashkelon and Ashdod" in southern Occupied Palestine on Friday afternoon.

Friday's attack was the first time any rockets had been fired from the Gaza Strip since Sunday when fighters in the Hamas-run territory began observing an unspoken truce, a military spokesman had said.

Israeli air and ground attacks over the past weeks have been on the rise and several Palestinians have martyred in the raids.

The truce came into effect after days of soaring violence in which Israeli troops pounded Gaza, killing 19 Palestinians.