The cease-fire that temporarily halted fighting between Israel and Gaza ended Friday morning when Palestinians fired rockets into Israeli territory. 

Palestinians renewed their offensive after negotiations in Cairo to extend the cease-fire failed. 

Palestinians fired more than 20 rockets into Israel from Gaza, according to The Washington Post. Two of the rockets were intercepted by the Iron Dome missile defense system over Ashkelon, a city in southern Israel. Several others fell short and landed in Gaza.

Residents in Gaza that had returned to the area along the border once again fled neighborhoods, fearing more violence and Israel's retaliatory strikes. While Hamas' own rockets likely injured Palestinian civilians, Palestinian authorities also said that an Israeli airstrike near a mosque killed a child and injured six other people.  

Israeli Prime Minister Benjamin Netanyahu said Friday that the Israeli Defense Forces will "respond forcefully to Hamas's violation of the cease-fire."

The Israeli military then announced that they would strike Gaza targets. 

Israeli police reported that two Israelis were wounded by rocket fire. 

Israeli airstrikes then hit near the mosque, reportedly killing 10-year-old Ibrahim Dawawsa, who was playing near the mosque when a missile from an Israeli drone hit the Sheik Adwarn neighborhood. 

Gaza officials said that five other children were wounded in the strike. 

While Israeli forces withdrew from Gaza at the beginning of the 72-hour cease-fire, the military is now considering renewing its ground offensive in an effort to stop Hamas from attacking Israeli towns. 

"The renewed rocket attacks by terrorists at Israel are unacceptable, intolerable and shortsighted," Israeli military spokesman Lt. Col. Peter Lerner told The Washington Post. "Hamas's bad decision to breach the ceasefire will be pursued by the IDF. We will continue to strike Hamas, its infrastructure, its operatives and restore security for the state of Israel."

Strategic Affairs Minister Yuval Steinitz said Friday that Israel would have to "seriously consider" sending ground troops into Gaza again "to topple the Hamas regime." 

The cease-fire, which took effect at 8 a.m. Tuesday, was followed by talks in Cairo with Egyptian, Palestinian, Israeli and EU delegations. Yet, there was little progress in the negotiations, as Israel refused Hamas' demands that Israel lift an economic blockade of Gaza and that the borders to Egypt and Israel be re-opened. 

Palestinian rocket fire hit Israel, while the delegations were in Cairo, prompting Israel to pull its delegation from the talks. 

Hamas spokesman Sami Abu Zuhri said the Palestinian delegation did not reach an agreement on extending the truce but will continue in the talks. 

The militant groups Islamic Jihad and another Palestinian faction claimed responsibility for the latest rocket attacks that ended the cease-fire. 

Hamas held its first public rally Thursday since the truce, saying they would not put down their arms and that they will continue the war if Israel does not meet their demands of lifting the economic blockade. 

Thousands of supporters echoed Hamas' bellicose rhetoric by chanting, "Blow up, blow up Tel Aviv."

Thursday's rally was planned by Hamas to put more pressure on Israel to capitulate to their demands. While thousands attended the rally, it was smaller that past rallies. While Hamas still has many supporters, it is not clear if the smaller rallies are a sign of dwindling support or a sense of Palestinian exhaustion.

"The war is not over yet," Mushir al-Masri, a top Hamas official, told the crowd. "Our fighters are still in the field, in their front line positions. Our tunnels still exist, and they reach into Israeli territory. If Israel doesn't agree to our demands, we will come there."

Some in the crowd waved Hamas flags -- one of which displays a picture of an AK-47 -- while parents had children dressed up as fighters in fatigues and green bandanas and holding toy guns. 

Hamas' hostile rhetoric proves that Palestinians and Israelis are still not close to reaching an agreement that will end fighting. Israel wants Gaza demilitarized before they will discuss demands. In addition to a lifting of the blockade, Hamas' demands include releasing Palestinian prisoners and allowing for more fishing privileges in the Mediterranean sea. 

Yet, Hamas said Thursday that they will never give up their weapons, and Hamas officials warned Israel not to "blackmail" the Palestinian delegation in Cairo into compromising their demands. 

Meanwhile, Israeli Brig. Gen. Mickey Edelstein said Israel is prepared to fight once again if Hamas continues waging war. 

"If Hamas will want to keep on fighting, we are ready for this," he told The Washington Post. 

The conflict that began July 8 has resulted in the deaths of 64 Israeli soldiers, three Israeli civilians and 1,900 Palestinians, most of whom were civilians.