A female shooter wielding two “assault-style” rifles and a pistol killed three students and three adults at a private Christian school in Nashville on Monday in the latest in a series of mass shootings in a country growing increasingly unnerved by bloodshed in schools.

Police said they believe the 28-year-old female shooter was a former student at The Covenant School, a Presbyterian school founded in 2001. Police shot and killed her. Investigators were searching her Nashville-area home.

The attack at The Covenant School — which has about 200 students from preschool through sixth grade, as well as roughly 50 staff members — comes as communities around the nation are reeling from a spate of school violence, including the massacre at an elementary school in Uvalde, Texas, last year; a first grader who shot his teacher in Virginia; and a shooting last week in Denver that wounded two administrators.

“I was literally moved to tears to see this and the kids as they were being ushered out of the building,” Metropolitan Nashville Police Chief John Drake said at an afternoon news conference.

The identities of the deceased and the suspect have not been released. The shooter’s motive was also not immediately clear.

President Joe Biden, speaking at an unrelated event at the White House on Monday, called the shooting a “family’s worst nightmare” and implored Congress again to pass a ban on certain semi-automatic weapons.

“It’s ripping at the soul of this nation, ripping at the very soul of this nation,” Biden said.

The suspect’s identity as a woman surprised experts on mass shootings. Female shooters make up only about 5% to 8% of all mass shooters, said Adam Lankford, a criminal justice professor at the University of Alabama who has closely studied the psychology and behavior of mass shooters.

Researchers believe there are three main explanations for why men commit more shootings than women, according to Jonathan Metzl, a professor of sociology and psychiatry at Vanderbilt University who has studied mass shootings for more than a decade.

Metzl listed those explanations as: Men have more testosterone, are socialized to be engaged in violence and own more guns than women.

“There is some story we don’t know here,” Metzl said of the suspected female shooter in Nashville. “From school shootings historically, very often we think that people have some historical connection or emotional connection to the school. There’s an untold story here.”

Monday’s tragedy unfolded over roughly 14 minutes. Police received the initial call about an active shooter at 10:13 a.m.

Officers began clearing the first story of the school when they heard gunshots coming from the second level, police spokesperson Don Aaron said during a news briefing.

Two officers from a five-member team opened fire in response, fatally shooting the suspect at 10:27 a.m., Aaron said. He said there were no police officers present or assigned to the school at the time of the shooting because it is a church-run school.

The Covenant School’s victims were pronounced dead at the Monroe Carell Jr. Children’s Hospital and Vanderbilt University Medical Center. One officer had a hand wound from cut glass.

Other students walked to safety Monday, holding hands as they left their school surrounded by police cars, to a nearby church to be reunited with their parents.

Rachel Dibble, who was at the church as families reunited in the nearby church, described the scene as everyone being in “complete shock.”

“People were involuntarily trembling,” said Dibble, whose children attend a different private school in Nashville. “The children … started their morning in their cute little uniforms they probably had some Froot Loops and now their whole lives changed today.”

Dr. Shamendar Talwar, a social psychologist from the United Kingdom who is working on an unrelated mental health project in Nashville, raced to the church as soon as he heard news of the shooting to offer help. He said he was one of several chaplains, psychologists, life coaches and clergy inside supporting the families.

“All you can show is that the human spirit that basically that we are all hear together … and hold their hand more than anything else,” he said.

Jozen Reodica heard the police sirens and fire trucks blaring from outside her office building nearby. As her building was placed under lockdown, she took out her phone and recorded the chaos.

“I thought I would just see this on TV,” she said. “And right now, it’s real.”

The Covenant School was founded as a ministry of Covenant Presbyterian Church, according to the school’s website. The school is located in the affluent Green Hills neighborhood just south of downtown Nashville, situated close to the city’s top universities and home to the famed Bluebird Café – a beloved spot for musicians and song writers.

Top legislative leaders announced Monday that the GOP-dominant Statehouse would meet briefly later in the evening and delay taking up any legislation.

“In a tragic morning, Nashville joined the dreaded, long list of communities to experience a school shooting,” Mayor John Cooper wrote on Twitter.

Nashville has seen its share of mass violence in recent years, including a Christmas Day 2020 attack where a recreational vehicle was intentionally detonated in the heart of Music City’s historic downtown, killing the bomber, injuring three others and forcing more than 60 businesses to close.

(AP)