Investigators are working with the Bureau of Alcohol, Tobacco, Firearms and Explosives to determine the origin of the weapon believed to have been used by school shooter Natalie Rupnow.

Police said the 15-year-old gunman used a handgun in the attack – a weapon whose history is now being traced by the ATF, Madison Police Department Chief Shon Barnes told CNN on Tuesday.

It is not yet clear who owned the weapon and where it came from.

“We have asked our partners at the ATF to expedite what we call an ATF traceability form to determine the origin of this weapon, who purchased it and how it got from a manufacturer to the hands of a 15-year-old girl.” he said.

“These are questions that will take some time to answer.”

The 15-year-old Abundant Life Christian School shooter had a “tumultuous personal life,” according to court documents filed in court Washington Post.

Natalie Rupnow’s parents, Melissa and Jeff Rupnow, reportedly divorced and remarried several times. According to the newspaper, her daughter attended therapy to help her with custody arrangements.

The post reported that the documents “point to a troubled childhood for Rupnow, whose parents were sometimes forced to move between their homes every two or three days because of custody arrangements.”

They reportedly divorced for the first time in 2014 and agreed to share custody of their daughter. It was agreed that she would live primarily with her mother. They married again in 2017 and divorced for the second time in 2020. They were supposed to split custody of Natalie evenly, court records show.

After the second separation, they briefly remarried. In April 2021, they filed for a third divorce. The post Reports.

A seventh-grader at Abundant Life Christian School described the slain teacher as a “kind and caring” person.

Angel Brube, who was in Madison, Wisconsin, at the time of the school shooting, reflected on Monday’s horror attack.

“It was very unexpected and also very scary,” Brube told CNN. “We were just chilling in class and it just came.”

The student said he knew one of the two victims, a teacher who died in the shooting.

“The teacher, yes, I knew her. And she was a really good person,” Brube said. He added that he had been taught by her “many times before.”

“She was always very kind and caring and she was always very friendly and communicative,” he added.

When Natalie Rupnow began pulling the trigger on her gun, Brube said the first shots he heard sounded like very loud footsteps or bangs.

He said police came to the school with “long guns.”

A student and a teacher were killed in Monday’s fatal shooting at Abundant Life Christian School in Madison, Wisconsin.

Police held a news conference Tuesday afternoon but have not yet officially released the names of the two.

The shooter – previously identified by police as 15-year-old Natalie Rupnow – also died from a suspected self-inflicted gunshot wound during the incident.

Mike Bedigan outlined what we know so far about the victims:

Star Wars actor Mark Hamill has shared a heartbroken and evergreen headline after the United States was rocked by another school shooting that left three people dead.

A 15-year-old girl, identified by police as Natalie Rupnow, killed a teacher and a fellow student after opening fire at Abundant Life Christian School in Madison, Wisconsin. Rupnow was also pronounced dead at the scene, said Department Chief Shon Barnes.

Six other people were injured, two of whom were in critical condition and had life-threatening injuries. At the time of writing, Rupnow’s motives remain unclear.

Greg Evans has the details.

The father of school shooter Natalie “Samantha” Rupnow, who killed two people and injured six others at Abundant Life Christian School in Madison, Wisconsin, encouraged the 15-year-old to practice her gun skills in the months leading up to the bloodshed on Monday, according to a review of his online activity.

In August, Jeff Rupnow – who could not be reached Tuesday – posted a photo on Facebook of his daughter, apparently armed with a shotgun, shooting clay pigeons at a local gun club.

“Is that a little one?” a friend commented.

“It’s sure!!!!” replied Rupnow. “We joined NBSC this spring and have loved every second of it!”

Justin Rohrlich has the story.

Neighbors said The Independents Justin Rohrlich of their sadness after learning the identity of the teenage shooter.

Suzy De Wilde said she and her husband moved in about four years ago and that she regularly saw Natalie Rupnow hanging out in the park next to their property.

“Every day I wash my dishes and I see this house,” she said. “It’s fucking crazy that the shooter lived there… Every day now I can look at that front door. How do you live with these memories everywhere?”

For more details, see the full report below.