Israeli air strikes on Gaza have killed 5 Palestinians, with now over 1,900 deaths in the Gaza strip, according to the UN.
Hostilities resumed after a 72-hour truce expired with talks in Cairo between Israel and the Palestinians failing to reach an agreement.
Israel says it renewed its military offensive after Hamas resumed the firing of rockets into the country, after the truce expired.
Violence also erupted in the West Bank, with at least two Palestinian deaths in clashes with Israeli soldiers reported since Friday.
Israeli officials said on Saturday that it will not return to negotiations in Cairo for as long as Hamas rockets continued to be launched, adding that it would consider “all options on the table” and was not limiting itself to striking back from the air.
The Palestinian delegation in Egypt meanwhile said that they will leave Cairo on Sunday unless Israel agrees to return to Egyptian-mediated negotiations, without conditions, to end the war in Gaza.
"Tomorrow we have a meeting with the Egyptian leadership in the morning and on the basis of that we will decide our future plan," head of the delegation Azzam Ahmed told Al Arabiya television.
"We will leave Cairo tomorrow if it is confirmed to us that they will not return except with conditions."