Israeli warplanes carried out at least 13 overnight air strikes on the Gaza Strip, injuring three children on Friday, Palestinian sources say.

The F16 fighter jets were hovered over the enclave, launching a series of successive strikes in southern Gaza Strip towns of Rafah and Khan Younis and in Gaza City.

Three children were injured by flying glass, AFP reported.

Hamas security sources said the Israeli jets bombed three different areas "that belong to Palestinian resistance groups," adding that the Israeli missiles landed mostly on non-residential areas, dpa reported.

Four of the strikes took place near the town of Khan Younis, BBC reported.

Israeli fighter jets regularly launch attacks on the beleaguered Gaza Strip, which has been blockaded since mid-June 2007.

On Tuesday, the Israeli army crossed into the coastal sliver’s southern Qarara region, before invading Dair al-Balah in central Gaza.

The Israeli strikes are at their highest level in more than a year.

(Press TV)