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GAZA, Aug. 9 (Xinhua) -- Palestinian President Mahmoud Abbas is pushing for ending up more escalation amid the second day of the Israeli fire on Gaza Strip on Thursday.

"President Abbas has conducted international calls at all levels to stop the Israeli escalation on our people in Gaza Strip," state-run news agency WAFA quoted the presidency statement as saying.

Abbas warned against danger of the escalation, calling for "an urgent and immediate intervention to stop worsening the conditions and prevent dragging the region into more destruction and instability," the statement added.

The Israeli air forces launched strikes on some targets in Gaza on Thursday morning, Palestinian official security source told Xinhua.

The strikes hit training spots of Hamas Islamic movement's military brigades and other agriculture lands. No injuries were reported, the source added.

The Israeli army in a statement said it fired more than 30 military targets in Hamas' training camps and in observation points including a warehouse.

The Israeli side added that its forces have also destroyed 140 targets of Hamas' strategic forms since Wednesday's noon, bearing the movement the responsibility for surge of violence.

Meanwhile, Hamas' al-Qassam brigades said in a statement it fired several rockets on two settlements in southern Israel and three military points near the border with Gaza.

According to Israeli sources, some 16 soldiers have been slightly wounded and facades of several houses were damaged by the rocket-propelled grenades.

At least three Palestinians were killed and other 12 were wounded by the Israeli raids since Wednesday.

Tensions mounted high while a delegation from Hamas had left Gaza to Egypt on Wednesday.