The United States and United Nations have condemned the resumption of attacks between Gaza and Israel on Friday, urging both sides to cease hostilities, reported BBC.
Condemning the new violence, White House spokesman Josh Earnest said the parties should work towards a "sustainable ceasefire" while the UN said more suffering for civilians was "intolerable".
"Hamas' decision to resume rocket fire will not only put the people of Israel and of Gaza at greater risk, it will do nothing to meet the expectations of the Palestinian people," Earnest said.
The US, he continued, hoped both parties would agree "to an extension of the ceasefire in the coming hours and ultimately conclude an agreement to cement a sustainable ceasefire".
UN Secretary General Ban Ki-moon also condemned the resumption of violence in the region.
He said in a statement: "More suffering and deaths of civilians caught up in this conflict is intolerable.
"The Secretary-General urges the parties to swiftly find a way back to respect the humanitarian ceasefire and to continue negotiations in Cairo to reach a durable ceasefire."
Israel launched air strikes across the Gaza Strip on Friday after Egyptian-mediated talks failed to extend a 72-hour truce in a month-old war.
Egypt later called for a resumption of the ceasefire, saying only a few points remained to be agreed. Palestinian factions said they would meet Egyptian mediators later in the day but there was no sign of any imminent deal.
An Israeli government official said Israel would not negotiate with Palestinians while militants continued to unleash missiles.
Five people were killed in Gaza on Friday, while two Israelis were injured by mortars.
More than 1,900 Palestinians, mostly civilians, have been killed in four weeks of violence in the Gaza Strip, the UN says.
Sixty-seven people have died on the Israeli side, including three civilians.
The Israel Defense Forces (IDF) said rocket fire continued on Saturday, with four hitting southern Israel.