Javier Cazares, father of Uvalde victim Jackie Cazares, reacts to a former school district police officer pleading not guilty to 29 counts of abandoning and failing to protect children. 

A former Uvalde, Texas, school district police officer pleaded not guilty to the 29 counts against him as families of the Robb Elementary School victims looked on.

ABC News’ Mireya Villarreal reports on Adrian Gonzales' 29 charges of child endangerment for his role in the response to the 2022 Robb Elementary School mass shooting.

A grand jury indicted former Uvalde School District Police Chief Pete Arredondo and a second officer, for their roles in the botched response to the 2022 massacre at Robb Elementary School.

More than two years after a gunman killed 19 children at Robb Elementary School, Pete Arrendondo has been criminally charged for failing to act and the botched response to the mass shooting.

Former Uvalde School District Police Chief Pete Arredondo was charged with 10 counts of abandoning and endangering a child.

After the tragic event at Robb Elementary School in Uvalde, Texas, where a gunman killed 19 students and two teachers, a local librarian is giving back to the community.

The former school district police chief has been indicted and booked into the Uvalde County jail, police confirmed to ABC News. The second identity hasn't been revealed yet.

Librarian Mendell Morgan highlights the work he has been doing at the local library for the children of Uvalde through his summer reading program.

The lawsuit claims the gunmaker Daniel Defense, videogame publisher Activision and social media giant Meta, all partnered to market the weapon to underage boys.

Families of the Uvalde victims have filed a lawsuit against Daniel Defense, and Activision over what they claim was their role in promoting the gun used in the shooting.

In the two years since 19 students and two teachers were killed in the Robb Elementary School mass shooting, some families of the 21 victims killed continue to search for answers and seek justice.

Two years after the Robb Elementary School massacre, the victims' families are still pushing for answers. Here’s where the investigation stands.

Families of the 19 students and two teachers killed at Robb Elementary announced new lawsuits against Texas officials.

The ABC News Live documentary "Print It Black" examines the Uvalde, Texas newspaper's coverage of the Robb Elementary School shooting.

Families of some of the Uvalde, Texas, mass shooting victims have reached a settlement with the city and county of Uvalde.

The families of the Uvalde school shooting victims agreed to $2 million settlement with the city.

The settlement comes as families approach the two-year mark of the May 24, 2022, massacre at Robb Elementary School, during which an 18-year-old gunman killed 19 students and two teachers.

John Quiñones' and María Elena Salinas new book follows families and residents in Uvalde, Texas after a school shooting that took the lives of 19 students and two teachers.

ABC News’ Linsey Davis spoke with ABC News contributor María Elena Salinas and ABC News John Quiñones on book "One Year in Uvalde: A Story of Hope and Resilience" and time with the mourning community.

The book, written by ABC’s John Quiñones and María Elena Salinas, follows families and residents in Uvalde, Texas, after a school shooting took the lives of 19 students and two teachers.

Cody Smith, the mayor of Uvalde, Texas has resigned.

The police chief of Uvalde, Texas, Daniel Rodriguez, announced his resignation on Tuesday.

The police chief of Uvalde, Texas, Daniel Rodriguez, announced his resignation on Tuesday.

The long-awaited first independent report found the first officers who responded to the mass shooting did nothing wrong and did not violate policy.

The Uvalde City Council will present the results of its independent investigation into how police responded to the mass shooting at Robb Elementary School.

"I was really shocked to be invited," Jazmin Cazares told ABC News. "I feel like it's another opportunity to spotlight what gun violence does to small communities."

A grand jury is now empaneled to examine whether any law enforcement officers should be criminally charged in the Robb Elementary shooting, ABC News has confirmed.

The report into the 2022 mass shooting at Robb Elementary School described "cascading failures of leadership" during the attack and an "unprecedented" level of misinformation in its aftermath.

The Department of Justice on Thursday released its report on the law enforcement response to the May 2022 shooting at Robb Elementary School in Uvalde, Texas.

ABC News' Linsey Davis speaks with Jazmin Cazares, whose sister Jackie Cazares was killed in the Uvalde school shooting, about her reaction to the DOJ's incident review.

A review team investigating the shooting "identified several critical failures and other breakdowns prior to, during, and after the Robb Elementary School response."

Also, big changes could be coming to au pair programs and clever road signs in the U.S.

The Department of Justice released a blistering critique of the law enforcement response to the Robb Elementary School shooting.

Attorney General Merrick Garland is in Uvalde, Texas, as the Justice Department released a report about the police response to the 2022 school shooting.

Attorney General Merrick Garland discusses the Justice Department’s report on the response of law enforcement during the Robb Elementary mass shooting on May 24, 2022.

Though families of the victims expressed gratitude for the report, attorney's for the families expressed more needs to be addressed on the issue of gun control.

The shooting at Robb Elementary led to 19 students and two teachers being killed.

The "Critical Incident Review" is not a criminal investigation into the May 2022 shooting in which 19 children and two teachers were killed, the DOJ said.

A first look at the documentary that follows the Uvalde High School football team through their season after tragedy struck the town. John Quiñones speaks with players and coaches.

Roland Ramirez, of the NFL’s Houston Texans, was across the state when he learned that 19 children and two teachers were killed in his hometown of Uvalde, Texas.

The low-ranked Uvalde High School football program’s transformative year helped uplift the grief-stricken community.

“21: Loyal and True,” premieres January 3 on ESPN+, then streams on ABC News Live starting on January 5.

“21: Loyal and True,” premieres January 3 on ESPN+, then streams on ABC News Live starting on January 5.

ABC News' John Quiñones talks about his new book, "One Year in Uvalde," documenting the lives of residents in the Texas city and following the community's activism and resiliency.

ABC News' John Quiñones and María Elena Salinas document the lives of residents in the city after the mass shooting at Robb Elementary School.

Experts examine America's history with guns, the real-life impacts of gun violence and what can be done going forward to mitigate the problem.

ABC News correspondent John Quiñones and ABC News contributor María Elena Salinas report on how the people of Uvalde are navigating their lives nearly six months after the Robb Elementary shooting.

Kimberly Mata-Rubio, the mother of Uvalde victim Alexandria "Lexi" Rubio, lost a special election to become mayor in Uvalde, Texas.

Mother of Uvalde victim loses mayoral election.