A mortar bomb fired from the Gaza Strip has killed a four-year-old child in Israel, according to emergency officials.
The attack occurred early on Friday evening in the southern Israeli village of in Sdot Negev, near the frontier.
Prime Minister Benjamin Netanyahu vowed that "Hamas will pay a heavy price" for the death of the boy.
Israel said at least 26 rockets were fired from Gaza on Friday He suffered fatal wounds after the barrage of mortars landed in the collective farm, known as a kibbutz
A mobile intensive care ambulance was sent to the scene and fire crews hosed down vehicles in a car park that were set on fire.
Mr Netanyahu said Israel's military would raise the tempo of operations against Hamas in the Gaza Strip "until the goals of Operation Protective Edge are achieved".
Three people were hurt in an Ashdod synagogue after a rocket attack It was the first Israeli death since a new round of fighting erupted on Tuesday between Israel and Gaza's Hamas rulers following the collapse of cease-fire talks in Cairo earlier this week.
The boy would be the fourth civilian in Israel to be killed in an attack from the coastal territory since the outbreak of conflict on July 8.
Earlier in the day three people were injured by shrapnel, after rocket fired from Gaza hit a synagogue in the city of Ashdod.
Nearly two dozen airstrikes were launched in response to the Gaza rockets The attack came just hours before the start of the Jewish Sabbath.
Ashdod is around 20 miles from Gaza and the rocket was one of more than two dozen fired into Israel.
Hamas also killed 18 people suspected of being informers for Israel on Friday.
The group said 11 were killed by firing squad at the Gaza City police headquarters following sentencing by courts.
Scores of people watched suspected Israeli informers being killed in Gaza Hamas media then reported that seven more alleged informants had been targeted by masked gunmen near a mosque.
Two of those killed were women, according to the Palestinian Centre for Human Rights, which called for an immediate halt to what it said were "extra-judicial executions".
Israel's intelligence services rely, in part, on informers to pinpoint the whereabouts of Hamas leaders.
Palestinians protested in Hebron in the West Bank on Friday The deaths come a day after Israel killed three top Hamas commanders - Mohammed Abu Shammala, Raed al Attar and Mohammed Barhoum - in an airstrike on a house in the southern Gaza Strip.
Meanwhile, Israeli airstrikes in Gaza have reportedly killed four Palestinians - including two at the Nusseirat refugee camp.
The Israeli Defence Force said it had launched about 20 airstrikes on targets inside Gaza on Friday in response to at least 26 rockets fired at Israel.
Youths used slingshots against Israeli security forces in Bethlehem Protests by Palestinians also broke out across the West Bank on Friday, with youths clashing with Israeli security forces in Bethlehem and Hebron.
So far more than 2,000 Palestinians have been killed in the conflict, as Israel sought to destroy a network of tunnels used by Hamas and other militants.
A total of 64 Israeli soldiers have also been killed in the conflict.
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