As a gunman entered Robb Elementary School in Uvalde, Texas, and started firing, one student said his wounded teacher texted 911 for help.

Daniel, 9, alongside his mother, Briana Ruiz, told CNN the gunman fired several shots into his classroom after being unable to enter. The door had been locked by his teacher, and the bullets fired struck the teacher as well as a classmate.

The deadly rampage at Robb Elementary marked at least the 30th shooting at a K-12 school in just the first five months of this year. It was the deadliest school shooting since the 2012 Sandy Hook massacre.

Daniel survived by first “hiding under a table next to the wall.” He said he could see the gunman through the door’s window.

“I could still see his face,” the boy said. “I could see him staring at people in front of me.”

Daniel later climbed out of a broken window to escape, cutting his hand on some glass, he said, and the two people injured in his class would survive.

But his cousin, Ellie Garcia, was in a different classroom. She was one of 19 children and two teachers killed in the worst school shooting in a decade, and less than a week later, major questions remain about the timeliness of the law enforcement response and whether more children could have been saved.

The Texas Department of Public Safety has laid out a timeline of the Tuesday shooting, showing the gunman was in a classroom with students for more than an hour before he was shot and killed by a Border Patrol tactical response team. Officers arrived at the school within minutes, but the commander on scene decided to wait over an hour for reinforcements, even as children locked inside the room with the gunman called 911 and begged for police help.

Video taken from the outside of the school during the incident, obtained by ABC News, includes what appears to be dispatch audio informing officers on scene a child is calling 911 from a classroom.

“Advise we do have a child on the line,” the dispatcher says. “Child is advising he is in the room full of victims.”

The video indicates police at the scene were informed at least one child remained alive inside the classrooms.

CNN has not been able to independently confirm the video/audio. The source of the video is unclear and it is unclear at what point in the incident the audio is heard. CNN has reached out to authorities to answer questions about this audio.

Texas DPS Director Steve McCraw told reporters Friday there were at least eight 911 calls from at least two separate callers from inside the school, covering a span of nearly 50 minutes.

At the request of Uvalde’s mayor, the US Department of Justice announced it will conduct an inquiry into the circumstances surrounding the shooting.

“The goal of the review is to provide an independent account of law enforcement actions and responses that day, and to identify lessons learned and best practices to help first responders prepare for and respond to active shooter events,” the DOJ said in a statement Sunday.

Alfred Garcia, whose daughter was killed in the shooting, told CNN he was in “disbelief” over how much time elapsed during the shooting before it ended and shared his frustration with authorities’ response.

“It doesn’t take a genius to figure out that it just took too long to get in there and, you know, had they gotten there sooner, and someone would have taken immediate action, we might have more of those children here today, including my daughter,” he said.

Two funerals set for today

Funeral services for two victims are set to take place at local funeral homes Monday. Visitation and Rosary for 10-year-old Amerie Jo Garza will take place Monday at Hillcrest Memorial Funeral Home, and services for 10-year-old Maite Yuleana Rodriguez will take place at Rushing Estes Knowles.

President Joe Biden and first lady Jill Biden visited Uvalde Sunday to pay their respects, attending Mass and laying flowers at a memorial for the victims. The two also met privately with family members of the victims as well as first responders.

In an interview with CNN affiliate KSAT, Texas state Senator Roland Gutierrez said Biden told him “we’re going to look to raze that school, build a new one.” Gutierrez said there is a federal grant process for schools like Columbine and other schools to raze these schools. Sandy Hook Elementary was rebuilt after the 2012 shooting, for example.

“What kind of world are we living in that legislation was created for razing these schools?” Gutierrez asked during the interview.

According to Gutierrez, Biden also told him, “I’m not going away … I’m gonna bring you resources … look to getting real money for mental health care.” There is only one psychiatrist in Uvalde, according to the senator.

Law enforcement response called into question

The actions undertaken by first responders – or lack thereof – during the shooting has been a focal point for those who say more should have been done sooner.

Law enforcement officers in Texas are trained to intervene quickly, according to active shooter guidelines in the state’s commission on law enforcement 2020 training manual obtained by CNN. The manual states an “officer’s first priority is to move in and confront the attacker.”

“As first responders we must recognize that innocent life must be defended,” it says. “A first responder unwilling to place the lives of the innocent above their own safety should consider another career field.”

Seven officers arrived at the scene within two minutes of the shooter firing in the classroom. Three officers approached the locked classroom where the gunman was, and two officers suffered graze wounds from bullets fired from behind the door, DPS said. Officers then stationed down the hallway.

Border Patrol agents belonging to a specialized unit arrived at the scene around 12:15 p.m., roughly 45 minutes after the gunman began shooting. The officer in charge had already made the determination the subject was barricaded in the room, according to a source familiar with the situation.

The team then did not breach the classroom for at least another 30 minutes, according to the timeline provided by DPS. Because the Border Patrol often serves in a support role, they will defer to the agency on command, according to the source.

A 911 call placed at 12:16 p.m., according to DPS, from a girl in one of the classrooms where students were shot told the operator eight or nine students were still alive.

When asked Friday why officers didn’t move in sooner, Texas Department of Public Safety Director Steven McCraw said “it was believed at the time that the subject was stationary and barricaded,” adding they believed “there was no risk to other children.”

“On retrospect, from where I’m sitting right now – clearly there was kids in the room, clearly they’re at risk,” McCraw said. “There may be kids that are injured, that may have been shot but injured and it’s important for lifesaving purposes to immediately get there and render aid.”

Community comes together

In the wake of the shooting, an outpouring of support to those in the community is being provided.

Carlos Hernandez, whose restaurant is a mile from Robb Elementary, wrote on Facebook hours after the shooting, “There’s no possible way I can open my kitchen with a broken heart and have fun doing it.”

On Thursday – his 33rd birthday – Hernandez decided to cook for the community, whipping up favorite dishes, including wings, mac-and-cheese and fried fish tacos.

Within two hours, Hernandez had given away more than 60 family-sized platters to feed mourning families and neighbors who are still learning how to cope with the tragedy inflicted on their tight-knit community.

“It’s a real tough situation, I’m just trying to show the kids that they do have us as their backbone and a support system,” Hernandez told CNN. “We always provide, whether there is an incident or no incident.”

Elsewhere in Uvalde, the El Progreso Memorial Library has become a place of healing.

On Wednesday, just a day after the shooting, children’s librarian Martha Carreon sat in front of rows of little faces, reading, singing, and giggling with the children, taking them away to a safe place far from the school where many of them became witness to horror.

“We want our building to be a safe space, a refuge that is a quiet, calm and cool haven,” El Progreso Memorial Library director Mendell Morgan told CNN.

Along with psychologists who will be available every weekday for children and adults to talk to, there will also be massage therapy practitioners, volunteers for arts and craft activities, pianists to play soothing music, and even magicians to hold professional magic shows.

“This is a strong community where we have true care and concern for one another,” Morgan said. “Many, if not most here, hold fast to their faith believing in God, that good is stronger than evil and light is stronger than dark.”

CNN’s Alaa Elassar, Ed Lavandera, Amanda Watts, Hannah Sarisohn, Virginia Langmaid, Paula Reid, Priscilla Alvarez, Jennifer Henderson, Christina Maxouris, Holly Yan and Aya Elamroussi contributed to this report.