Police in Madison, Wisconsin, are trying to determine what prompted a 15-year-old student to open fire at a private Christian school.

Madison police are still investigating the motive behind Monday's school shooting at Abundant Life Christian School.

Rupnow is one of just nine female school shooters in the last quarter century and she’s about a year younger than the median age of those who have opened fire at American schools

Wisconsin authorities offered limited insight into the motivation behind Natalie Rupnow’s murderous rampage at Abundant Life Christian School. Rupnow shot and killed a teacher and fellow student Monday at the Wisconsin school.

Natalie Rupnow killed two people and wounded six others when she opened fire at the Abundant Life Christian School in Madison on Monday.

What we know about ‘turbulent’ life of killer Natalie Rupnow, 15 - Natalie ‘Samantha’ Rupnow has been identified as the shooter and was pictured at a firing range holding a gun in the months before th