Israel Air Force fighter jets bombed a suspected weapons lab in Gaza City and two smuggling tunnels near the Gaza-Egypt border town of Rafah before dawn on Saturday, according to Israel Radio.

The Israel Defense Forces told Israel Radio that the air strike was a response to Palestinian rocket fire upon the western Negev on Friday night. No injuries or damage was reported in the rocket attack.

To protest the rocket fire from Gaza, Israel submitted a formal complaint to United Nations Secretary-General Ban Ki-moon as well as the head of the UN Security Council, Israel Radio reported.

Israel's ambassador to the UN, Gabriela Shalev, told the world body that there has been a recent upswing in the number of rocket attacks perpetrated by Hamas. In September alone, Israel absorbed a total of 13 rocket and mortar attacks by Palestinians in Gaza, Shalev said.

In addition, Shalev cited 15 incidents of Palestinian gunfire against IDF soldiers and tanks along the Gaza security fence as well as numerous attempts by Palestinians to approach the fence and plant explosive devices.

According to Israel Radio, Shalev called on the UN to condemn the increase in Hamas violence against Israel. The envoy said that Israel would continue to do all it could to defend its borders, Israel Radio reported.