ORLANDO, Fla. » Investigators have recovered graphic security camera footage from the Orlando nightclub where a gunman Sunday morning killed 49 people and injured 53 others.

It’s not clear how much of the shooting the video shows, but a U.S. law enforcement official today described it as a minute-by-minute replay that shows how cold-blooded the massacre was.

Omar Mateen, a 29-year-old security guard from Fort Pierce, walked into the club about 2 a.m. Sunday with a semi-automatic hand gun and an assault rifle and opened fire. He died three hours later when the Orlando police SWAT team stormed the building.

This morning Mayor Buddy Dyer said nearly 100 families have received help from the city’s Family Assistance Center since it opened at Camping World Stadium, former known as the Citrus Bowl, two days ago.

Dyer was flanked by representatives of many of the 35 organizations, everything from the African American Chamber of Commerce to the Zebra Coalition, that have set up shop at the makeshift resource hub.

“We can’t thank these organizations enough for their tireless efforts in this difficult situation,” Dyer said.

According to the mayor, in two days, 94 families and 256 people total have visited the Family Assistance Center. More than 200 free airline tickets have been distributed to grieving families, Dyer said.

Dyer said 85 victim compensations claims, for expenses such as medical bills and funeral costs, have been filed so far, including for the 49 people slain at Pulse early Sunday.

Other services made available at the center include grief counseling, financial assistance and help obtaining visas, officials said.

“Some of the people come here thinking they need only one or two resources, but once they see the variety they leave with so much more,” Dyer said.

Amy Decker of the American Red Cross said one family of 16 came to the center with just a single request, but had been helped by 27 agencies by the time they left.

“What’s happening here is everything that these people need,” Decker said.

The news conference came amid questions about the city’s recently established OneOrlando fund, which already has drawn more than $7 million in commitments, Dyer said.

The city’s initial intention was to direct the OneOrlando money to nonprofits in the community.

But Thursday, a statement attributed to family of victims from other mass shootings, including those in Newtown, Conn., and Colorado, said similar funds in those communities gave little to victims.

Dyer said today the city is shifting its plans for OneOrlando so that funds can be distributed directly to the families, who have immediate needs to cover, including basic expenses like rent and groceries.

He noted that after tragedies in other cities, community funds took “weeks and weeks” to get help to victims, something Dyer said the city hopes to avoid.

“We’re working through how we can directly distribute the funds, and on what criteria, but we want to distribute them directly to the victims and the families,” he said.

However, he did not provide specifics Friday morning. The details still need to be worked out, Dyer said.

“We want to make sure that we do it correctly,” Dyer said. “We want to do it transparently. We want to be accountable for the funds.”

Dyer said Orlando has enlisted the help of Kenneth Feinberg, a Massachusetts attorney who headed The One Fund Boston, a charity for the victims of the 2013 Boston Marathon bombings.

In the meantime, the Family Assistance Center will remain open at least through Sunday at the stadium, Dyer said, and is “open to anyone who has been directly affected by the tragedy, either physically or mentally.”

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