The Israel Defense Forces released its report Thursday of its investigation into the IDF's failed response to Hamas' Oct. 7 massacre at Kibbutz Be'eri.

Over 100 people were killed at Kibbutz Be'eri and many were taken hostage.

The IDF admitted that its troops didn’t enter the kibbutz for nearly seven hours following the attack.

Hamas terrorists invaded the kibbutz around 6:30 or 6:45 a.m. and had control of the kibbutz from 9:30 a.m. to 1:30 p.m, the IDF said. The IDF said its forces stayed at the gate until 1:30 p.m. Only at 1:30 p.m. did the Israeli military intervene, the IDF said.

The IDF said there were "several instances where security forces gathered at the entrance to the kibbutz without immediately engaging in combat."

Before the IDF arrived, civilians in the kibbutz responded to the attack on their own.

The IDF said "after fully exhausting negotiation efforts" with Hamas terrorists who were holding hostages at house in the kibbutz, its forces fired at the house. The IDF said no civilians were injured when the Israeli forces fired on the house, "except for an isolated incident outside the building where two civilians were injured by shrapnel."

The IDF admitted to making severe mistakes and said it "failed to protect" the residents.

In the wake of the report, Israeli Chief of the General Staff Herzi Halevi told officers that "we must all learn from the heroism of the people of Be'eri, the civilian rapid response team, and other civilians who defended their families and the kibbutz members."

-ABC News' Dana Savir and Ellie Kaufman

The survivors of Hamas' Oct. 7 massacre at Kibbutz Be’eri heard for the first time Thursday the results of an Israel Defense Forces investigation into the failed response to the attack. Over 100 people were killed at Kibbutz Be’eri and many were taken hostage.

The kibbutz members said in a statement that while the IDF's probe was "thorough," they still don’t have "satisfactory" answers to "some critical questions."

They said their questions include: "Why did not the many military forces who gathered at the gate enter the kibbutz for many hours, when the kibbutz was burning and its residents were crying for help? What caused the intelligence failure that enabled the Hamas invasion plan, and how was the border fence breached without an immediate response from the IDF?"

The kibbutz members said, "most importantly," they demand the return of the hostages.

-ABC News' Dana Savir and Guy Davies

The Biden administration lifted the suspension on 500-pound bombs for Israel that had been in place since May, when the administration placed a hold on at total of 3,500 U.S.-made bombs that it feared might be used in Rafah.

The administration announced at the time that 1,800 2,000-pound bombs and 1,700 500-pound bombs would not be delivered because of their potential use in civilian areas.

The hold on the 2,000-pound bombs will continue, a U.S. official told ABC News on Wednesday.

The official said the use of the larger bombs was the main concern because they're sometimes "co-mingled" with other munitions.

"Because our concern was not about the 500-[pound] bombs, those are moving forward as part of the usual process," the official said.

-ABC News' Luis Martinez

As attacks intensify along Israel's northern border with Lebanon between Hezbollah and Israel, Hezbollah leader Hassan Nasrallah said Wednesday that if a cease-fire agreement is reached, "our front will cease fire without discussion."