GAZA CITY, Gaza Strip (TheBlaze/AP) -- Hamas and Israel have both blamed each other for an explosion at a Gaza park Monday that killed at least 10 Palestinians - including nine children playing on a swing - in a horrific scene that underscored the heavy price civilians are paying in the conflict.
Israel's military said a rocket misfired by Gaza militants was responsible, and it has now released aerial photos that it said showed the weapon's path. Gaza officials blamed Israeli airstrikes.
Gaza terrorists fired rockets today, hoping to kill Israelis. Instead, they hit a hospital & a refugee camp in Gaza. pic.twitter.com/dXNhtCHTQc— IDF (@IDFSpokesperson) July 28, 2014
The blast took place on the first day of Eid al-Fitr, a Muslim holiday that marks the end of the holy fasting month of Ramadan.
Afterward, dozens of Palestinians crowded the spot at the park in the Shati refugee camp northwest of Gaza City, where pools of blood could be seen on the ground. Some cried out, pleading for God's mercy.
Witnesses said the youngsters had been playing on a swing set.
"The children were playing and were happy, enjoying Eid, and they got hit. Some lost their heads, others their legs and hands," Nidal Aljerbi, a witness, told The Associated Press.
Another man stood beside a pool of blood and cried: "We don't want an agreement. We don't want a cease-fire. All of us, children, women, will give our souls for God!"
NBC News first reported -- then deleted -- one of its reporter's claims that an "Israeli strike" was responsible for the blast. The report later stated that missiles or rockets hit the park, but did not specify who was responsible.
The reporter who made the claim, Ayman Mohyeldin, was recently removed from Gaza by NBC News over claims of bias, but was reinstated after some accusations of censorship.
In a hectic scene, Palestinians shed tears outside the doors of the morgue at Gaza City's Shifa Hospital, and relatives crammed into the hall. The bodies of three children lay on shelves in the mortuary, their clothes heavily bloodstained, their flesh torn by shrapnel.
The strikes occurred on a day of heavy fighting after a temporary humanitarian cease-fire. At the same time, international efforts to end the three-week war intensified.
The streets near the park were strewn with shattered glass from homes and shops, and the ground was marked with the bloody footprints of those who helped carry the bodies to ambulances.
In this image taken from video an explosion hits the media complex that houses the offices of Hamas-run Al Aqsa television and radio in central Gaza City early on Tuesday, July 29, 2014. The building also houses offices of a number of Arab satellite television news channels. (AP Photo/APTN)
Lt. Col. Peter Lerner, an Israeli army spokesman, denied Israel was involved. "This incident was carried out by Gaza terrorists whose rockets fell short," he said.
Early Tuesday, the military released aerial photographs that it said showed the paths of two misfired rockets that hit the Shifa Hospital and the park. It said the paths were detected by Israeli military radar and sensors.
Lerner said that since the start of the fighting, Israel has identified about 200 failed rocket launches that struck within the Gaza Strip.
In a text message, Hamas spokesman Sami Abu Zuhri said the killings would be avenged.
"The massacre against the children in Shati refugee camp is a war crime," Zuhri said. "Such a crime is a result of the silence of the international community. This crime will not break our will, and the occupation will pay the price."
The United Nations on Monday called for an immediate cease-fire in the fighting that has killed at least 1,085 Palestinians, 52 Israeli soldiers and three civilians on the Israeli side.
The United Nations says civilians make up more than three-fourths of the dead and a majority of the wounded. Children account for at least 30 percent of the casualties, according to UNICEF, the U.N. children's agency.
In another tragic episode involving children, four Palestinian boys, cousins ages 9 to 11, were killed July 16 on a beach west of Gaza City by shellfire from a navy ship. Israel later apologized for the deaths.
Israel blames the civilian deaths on Hamas, accusing it of firing from residential neighborhoods and using civilians as human shields.
The Israeli military says it is doing its utmost to spare civilians, including issuing evacuation warnings to homes and neighborhoods that are about to be hit in Israel's air and ground operation.
Gaza is densely populated, with 1.7 million people squeezed into a small strip of land on the Mediterranean Sea, leaving little room for escape.
Over the course of the war, there have been similar instances in which each side blamed the other for strikes that have had horrific results.