The mother of one of 19 children killed in the school shooting in Uvalde, Texas, has filed a federal lawsuit against police, the school district and the Georgia-based maker of the gun used in the massacre.

A series of miscommunications from nearly 400 members of law enforcement led to long wait times for those stuck inside Robb Elementary School, where 19 students and two teachers died.

The officer becomes the first member of the state police force to lose their job in the fallout over the hesitant response to the May school attack that killed 19 children and two teachers.

The Texas school district said it's suspending its police department, citing "recent developments." An investigation is looking into the police response to the Robb Elementary shooting in May.

The investigative committee found law enforcement's response to the massacre involved little coordination and no leadership. School faculty, meanwhile, failed to uphold existing safeguards.

Mayor Don McLaughlin disputed a new report that alleges missed chances to quickly end the deadly May 24 attack at a Texas elementary school.

Texas state Sen. Roland Gutierrez and Uvalde Mayor Don McLaughlin say they've received complaints about the Uvalde Together Resiliency Center.

Some of the 21 victims at Robb Elementary School possibly could have been saved had they received medical attention sooner while police waited before breaching the classroom, the report says.

The school will be demolished so "students and staff will not have to return to the building at the site of the tragedy," the district said.

School officials praised the students for their strength and resilience through three COVID-19 pandemic years, three changes of principals and then the May 14 mass shooting at Robb Elementary School.

Frank DeAngelis was principal at Columbine High School in Colorado when 12 students and a teacher were killed there. He helps lead a group that offers aid and a sounding board after each fresh attack.

"My own historically Republican mother told me she looked up her senators and called them for the first time in her life," Liz Hanks, who leads the Texas chapter of Moms Demand Action, told NPR.

In recent years, the medical profession has developed techniques to help save more gunshot victims, such as evacuating patients rapidly. But some trauma surgeons say that even those improvements can save only a fraction of patients when military-style rifles inflict the injury.

After Sandy Hook, Katherine Schweit created a program to navigate similar crises. She says the way law enforcement handled the shooting in Uvalde went against everything they trained for.

It has almost no chance of becoming law as the Senate pursues negotiations focused on improving mental health programs, bolstering school security and enhancing background checks.