A shooting at a small Christian school in Madison, Wisconsin, on Monday, left a teenage student and a teacher dead and several others injured, casting the small religious community into mourning just days before the school was going to close for Christmas.

At a press briefing Monday evening, Madison Police Chief Shon Barnes said that the shooter had been identified as 15-year-old Natalie Rupnow, who went by the name Samantha. “She was a student at the school and evidence suggests that she died from a self-inflicted gunshot wound,” he said.