(CNN) — A man claiming to be the uncle of Uvalde school shooter Salvador Ramos called 911 during the May 2022 massacre at Robb Elementary School and asked a dispatcher to connect him with his nephew in hopes he could help end the situation.

“What’s going on with Robb right now, he’s my nephew,” said the 911 caller, who identified himself as Armando Ramos. “I wondered, maybe he could listen to me because he listens to me, everything I say to him he listens to me.”

The audio is part of a trove of bodycam and dashcam videos, audio recordings of 911 calls and radio communications, documents and text messages released by the city more than two years after the shooting that killed 19 children and two teachers in Uvalde, Texas.

Most of the material released was previously reported by CNN. The files – some of which were redacted – were released only after CNN and more than a dozen other major news organizations filed a lawsuit seeking public records related to the massacre.

Ramos’ call came in at 12:57 p.m., just seven minutes after police used a janitor’s key to break open the locked classroom door and shot and killed the suspect, CNN previously reported.

Unaware that his nephew was already dead, Ramos said that if he could talk to him, “maybe he could stand down or do something to turn himself in.”

The conversation lasted just over six minutes, during which time Ramos could be heard saying, “why did you do this…Why?” and, “please don’t do anything stupid.”

At one point, Ramos told the dispatcher, “I think he’s shooting kids. He’s holding the classroom hostage.”

Ramos said his nephew was with him the night before the shooting, along with other family members, and while he told the dispatcher he wasn’t aware of any changes in the shooter’s behavior prior to the incident, he mentioned his nephew indicated his grandmother was “bugging” him .

Families continue to demand accountability

For the victims’ families, the release was long overdue.

Law enforcement agencies have been heavily criticized for their failed response to what became one of the deadliest shootings at a K-12 school in the United States.

While the victims lay wounded, it took the 376 officers on the scene 77 minutes to confront and kill the gunman from the time he entered the school through an unlocked door. More than 90 officers of the Texas Department of Public Safety responded to the scene and was among the first to arrive.

In one of 911 callsfirst reported by CNN in the months after the shooting, a 10-year-old girl trapped in a classroom tells the police chief to “hurry up” because there are “a lot of dead bodies.”

Brett Cross’ nephew, Uziyah Garcia, 10, were killed in the massacre. Cross told The Associated Press that families were not notified in advance of the records’ release on Saturday but said it was long overdue.

“If we thought we could get what we wanted, we’d ask for a time machine to go back in time and save our children, but we can’t, so all we’re asking for is justice, accountability and transparency, and they refuses to give this to us,” Cross said.

Jesse Rizo, uncle of Jacklyn Cazares, 9, who was also killed in the shooting, said the document release is rekindling anger because the documents show how long law enforcement waited. “If they would have broken earlier, they might have saved some lives, including my niece’s,” he told the AP.

The officers were concerned for their own safety

As criticism mounted in the hours and days after the massacre, some officers worried for their own safety, text messages released Saturday show.

Among the hundreds of pages of messages, a series of texts show a group of police officers expressing fear for their safety. In the text messages, several officers are asking for their photos to be removed from the department’s website after they felt they were being blamed for the failed response.

One group chat mentions the director of the Texas Department of Public Safety and says, “DPS director just through (sic) everyone under the bus..!!!”

“Is there any way to get our pictures off the PD website for our safety…?.. take the website down,” one officer wrote.

At a news conference after the mass shooting, Steve McCraw, director of the Texas Department of Public Safety, said the commander on the scene did wrong decision and didn’t try fast enough to get into the classroom where the gunman was. He would later say that the first officers on the scene, including the local Uvalde police seen communicating in the newly released texts, acted against active shooter training by initially retreating and never regaining momentum to take out the shooter.

CNN has reached out to the Texas Department of Public Safety for a response to the officials’ claims on Saturday.

In one interview this week, former Uvalde school police chief Pete Arredondo told CNN he felt he was “scapegoated from the beginning.”

Arredondo was prosecuted in June by a grand jury and was indicted on 10 counts of child endangerment and known criminal negligence for failing to recognize the incident as an active shooter and for failing to take adequate steps to intervene. Arredondo have said he never considered himself the rescue leader.

He pleaded not guilty to those charges last month, CNN previously reported.

Former school police officer Adrian Gonzales was also indicted on criminal charges related to law enforcement’s failed response to the shooting. Gonzales entered a not guilty plea on July 25.