There was no immediate comment from Israeli officials.
"The U.N. says Gaza will be unlivable by 2020", IMEU observes.
In a tweet, the Israeli military said Hamas, the Palestinian militant group that controls Gaza, had "used the building for military purposes". Despite the animosity, the bitter enemies appear to be working through Egyptian mediators to avoid another war. Nevertheless, there is no indication that Israel's "waves of attacks against targets across Gaza" was in response to the scores of Palestinian rocket attacks targeting Israeli civilians.
But the continued outbursts of fire have jeopardized those cease-fire efforts.
The health ministry added that around 12 Palestinians were injured, two critically, and were transferred to the hospital for treatment.
The incident occurred while a group of senior Hamas leaders from overseas were visiting Gaza to discuss the ceases-fire efforts with local leaders.
The Israeli military said its aircraft had struck more than 150 Hamas targets overnight, while more than 180 Palestinian rockets and mortars hit southern Israel.
Nearly 200 rockets and mortar shells were fired from within Gaza by Hamas and other Palestinian movements at towns and villages in Israel, provoking a similar number of attacks by the Israeli Air Force.
The two were killed when an Israeli airstrike hit their home in the Jaafari area of central Gaza. The ministry said the militant and the civilians were killed in separate incidents.
Kamal Khamash, the brother-in-law of the pregnant mother who died alongside her child, told the Associated Press that the family was asleep when the projectile hit the house. Israel will keep acting with force.
In Sderot, the Israeli city near the Gaza Strip, a gaping hole could be seen in front of a small, three-storey building.
Separately, The Times grossly misrepresents Hamas' ongoing rocket attacks against the Gaza envelope communities with the following claim: "Palestinian fire was mostly calibrated to hit border areas rather than population centers".
The Israeli military said the building served as a Palestinian military installation. "The Prime Minister and Defence Minister have instructed the IDF (Israel Defence Forces) to prepare for all possibilities", an Israeli official said after the first round of consultations. "We are closing in on operation in Gaza", a senior IDF official told Haaretz on Thursday.
The attacks come as the United Nations and Egypt try to secure a deal between Israel and Hamas for a lasting truce.
"If the current escalation, however, is not contained immediately, the situation can rapidly deteriorate with devastating consequences for all people", he said in a statement.
"From a technical perspective, the IDF could occupy the Gaza Strip in a matter of days", Barak says about reports of a possible large-scale IDF offensive in the Palestinian territory. Hamas militants responded with a cross-border fusillade that sent Israelis scrambling for air raid shelters. The protests have been aimed in part at trying to break the blockade.
Since March 30, hundreds and sometimes thousands of Palestinians have gathered.
A more than decade-long Israeli air, land, and sea blockade has crippled Gaza's economy, which boasts one of the highest unemployment rates in the world at 44 percent, leaving an estimated 80 percent of the territory's population dependent on humanitarian assistance.
A magnitude 7.0 quake struck at a depth of 33km about 154km south-southwest of Puerto Triunfo in El Salvador. But it has come under heavy worldwide criticism for its frequent use of force against unarmed protesters.