GAZA - Three more Palestinians were killed late on Monday night in the ongoing Israeli warplanes airstrikes on various targets in the Gaza Strip, raising the death toll since the start of the Israeli attack to 110 Palestinians, medical sources and witnesses said.

A Palestinian firefighter tries to extinguish a fire after an Israeli air strike, witnessed by a Reuters journalist, on a floor in a building that also houses international media offices in Gaza City Nov 19, 2012. [Photo/Agencies]?

Two children from al-Nasasra family were killed in an airstrike on the southern Gaza Strip town of Rafah and a third Palestinian was killed in an airstrike on northern Gaza Strip.

Earlier on Monday night, a father and two of his children aged two and four years old were killed and 13 others wounded in an Israeli airstrike in an Israeli air raid on a house in northern Gaza Strip, medics said.

The airstrike damaged neighboring houses and injured 13, including other members of the Hijazzi family, said the neighbors. Al-Qedra said that on Monday, 39 Palestinians were killed and more than 100 injured.

The latest airstrike raised the number of Palestinians killed since Israel began its military offensive here to 110 dead and more than 800 wounded, according to al-Qedra.

The aerial Israeli military campaign in the Hamas-controlled Gaza Strip started Wednesday. Hamas' armed wing al-Qassam Brigades said that its militants fired more than 1,200 rockets from the coastal enclave on Israel.

The fatal airstrike came amid Egyptian efforts to mediate a cease-fire between Hamas and Israel.