Israeli jets have launched air strikes in the Gaza Strip, Palestinian security sources said, just hours after rockets from the enclave hit southern Israel.

The air raids on Saturday morning targeted four empty facilities belonging to the Hamas movement, ranging from Beit Hanoun in the north to Rafah in the south, the sources told the AFP news agency.

The attacks caused damage but no casualties.

The Israeli army said its "aircraft targeted two Hamas military training facilities and two military sites in the Gaza Strip".

Reality Check: Gaza is still occupied

"The IDF [Israeli army] holds Hamas responsible and accountable for all attacks emanating from the Gaza Strip," a statement read.

Late on Friday, two rockets fired from Gaza hit southern Israel, without causing casualties or damage.

Since the end of Israel's 50-day war on Gaza in the summer of 2014, nearly 30 projectiles fired from the Hamas-controlled Palestinian enclave have hit Israel, according to Israeli military data.

The past few months have witnessed violence in Israel and the Palestinian territories that has claimed the lives more than 130 Palestinians and 21 Israelis.

On Friday, two Palestinians were slightly wounded by Israeli gunfire after they stormed the border fence in northern Gaza, the Israeli army and Gaza medics said.

Source: Agencies