Gaza conflict: US and UN condemn new Gaza violence
The US and UN have condemned the resumption of violence between Israel and Palestinian militants after the end of a three-day truce on Friday.
The Israeli military says it struck 33 sites in Gaza early on Saturday, while five rockets have hit southern Israel.
Five Palestinians were killed, including three whose bodies were pulled from the wreckage of a mosque, Gaza health officials said.
At least 1,960 people have died since violence erupted in Gaza in early July.
More than 1,900 Palestinians, mostly civilians, have been killed, the UN says.
Sixty-seven people have died on the Israeli side, including three civilians.
Israel renewed strikes on Gaza soon after the ceasefire lapsed, saying it was in response to rocket fire by Hamas, which controls Gaza.
Five people, including a 12-year-old boy, were killed in Gaza on Friday, while two Israelis were injured by mortars.
White House spokesman Josh Earnest has called on the parties to work towards a "sustainable ceasefire".
"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," Mr Earnest said.
UN Secretary General Ban Ki-moon also condemned the resumption of violence in the region, calling the deaths of civilians "intolerable".
The violence resumed after Israeli and Palestinian representatives failed to agree a long-term truce at indirect talks in the Egyptian capital, Cairo.
Hamas says the major sticking point in negotiations is Israel's refusal to meet its demand of lifting the blockade on Gaza.
It is also seeking the release of about 100 people released in 2011 in a prisoner exchange deal but re-arrested in the past six weeks.
Hamas rejected Israel's call for the demilitarisation of Gaza.
However, the group said the Palestinian factions were willing to continue the talks despite the fresh violence, and a Palestinian delegation met Egyptian mediators in Cairo late on Friday.
But Israeli officials, who have pulled out of talks, said they would not "negotiate under fire".
Senior Palestinian official Mustafa Barghouti told the BBC on Friday that rocket fire into Israel had come from other Palestinian factions, and not from Hamas.
The Israel Defence Forces (IDF) said it resumed its offensive with aircraft, tanks and gunboats after militants began firing missiles from Gaza shortly before Friday's ceasefire ended at 08:00 local time (05:00 GMT).
More than 70 rockets had been fired from Gaza into Israel since the truce expired, it said on Twitter.
Israel launched Operation Protective Edge on 8 July with the stated aim of halting rocket fire from militants in Gaza and destroying the network of tunnels it said were used by militants to launch attacks inside Israel.
- 1,922 killed, including at least 1,407 civilians
- 448 children
- 235 women
- 64 soldiers
- 2 civilians
- 1 Thai national in Israel
(Source: OCHA; 0500 GMT on 8 August)