A shooting Monday morning at Abundant Life Christian School in Madison, Wisconsin, has left three people dead, including a teacher, a teenage student and the alleged shooter, a teen who also attended the school, the City of Madison Police Department has reported.

The shooting occurred close to 11 a.m. CST at the private school's 28-acre campus, in a classroom that was used as a study hall for students from various grades. Police said the 911 call about the school shooting came from a 2nd grade teacher.

At least six other students are reported hurt. Two of those students have life-threatening injuries while four have non-life threatening injuries, according to police.

Late Monday evening police identified the alleged shooter as 15-year-old Natalie Rupnow, who went by Samantha. Police evidence suggests she died from a self-inflicted gunshot wound, and she was pronounced dead on the way to the hospital. The Dane County Medical Examiner's Office will cite an official cause of death after its examination concludes.

Police said they believe there was only one shooter involved and they are working to determine a motive. Detectives talked with the alleged shooter's family members Monday evening and conducted a search of their home in Madison.

Abundant Life Christian School, founded in 1978, serves about 390 students in grades K-12.

At a Monday afternoon press briefing, City of Madison Police Chief Shon Barnes said there was no more threat to the school and that students were being reunified with their families.

"Today truly is a sad day for Madison and for our country. It is a day that I believe will live in our collective minds for a very, very long time," said Barnes, who taught history for four years before becoming a police officer.

Teaching, Barnes said, was "one of the greatest joys of my life before becoming a police officer, and I can tell you what a special place our schools are. With that being said, we owe it to our community to do everything possible to ensure that it's not only a special place, but a safe place as well, and we're going to continue to do that."

The school shooting in Wisconsin came the week before Christmas and two days after the 12th anniversary of the Sandy Hook Elementary shooting that killed 20 1st graders and six educators. The 2012 massacre, given its scope and the age of its victims, has stood out each year since as a particularly grim reminder of the tragedy of school shootings.

As of Tuesday morning, there have been 324 school shootings in 2024, according to the K-12 School Shooting Database. The database defines school shootings as when a gun is brandished, is fired, or a bullet hits school property for any reason, regardless of the number of victims, time or day of the week. Last year had the highest recorded number of school shootings with 349, according to the database.

Everytown for Gun Safety, a nonprofit that supports gun violence prevention, also tracks school shootings. The group said this year has seen 205 incidents of gunfire on K-12 and college campuses nationwide, resulting in 58 deaths and 156 injuries.