Gaza City: Israeli warplanes staged three raids in the Gaza Strip overnight wounding four Palestinians, Hamas security officials and witnesses said on Thursday.
Two people were wounded in strikes on the east and west of Gaza City and two others were hurt in a third attack on the centre of the Gaza Strip, they said.
An Israeli military spokeswoman refused to comment.
Earlier on Wednesday, a rocket fired from the Hamas-controlled Gaza Strip hit southern Israel but no one was hurt, an Israeli Army spokesman said.
Army radio said that another rocket fired at Israel fell short and landed inside the strip.
The number of rocket attacks declined sharply following Israel`s massive 22-day offensive against Gaza, which ended in January 2009, and the radical Hamas movement which rules the enclave has taken steps to rein in the attacks, believed to be the work of rival factions.
However, since the start of this year militants have fired more than 120 rockets or mortar rounds into southern Israel, according to the military.