The female school shooter, who gunned down students and teachers before turning the gun on herself in Wisconsin, was named by officials on Monday night.
Natalie 'Samantha' Rupnow, 15, killed a student, a teacher, and then herself at Abundant Life Christian School in Madison shortly before 11am on Monday.
Rupnow's alleged manifesto has been circulating on social media. Police said they have not confirmed the document's validity.
Two people are currently fighting for their lives in hospital after the rampage.
Rupnow - who died from a self-inflicted gun wound on the way to hospital after the school shooting - opened fire in a mixed-grade study hall, police said.
Follow along for DailyMail.com's live updates of the ongoing situation.
Cops unsure if shooter's manifesto is real
Police said they are aware of a manifesto allegedly written by the 15-year-old shooter circulating on social media.
However, cops said they haven't been able to verify that it's authentic.
Chief Barnes told the press conference on Monday night: 'A document about this shooting is circulating at this time on social media, but we have not verified its authenticity.'
Breaking:School shooter is named as 15-year-old Natalie 'Samantha' Rupnow
Police identified the Madison, Wisconsin school shooter who killed a teacher and a student before turning the gun on herself as 15-year-old Natalie Rupnow, who went by the name Samantha.
A student at the Abundant Life Christian School, Rupnow opened fire in a study hall on Monday killing two victims and injuring several others, Madison Police Chief Shon Barnes confirmed Monday night.
The suspected shooter was a teen who attended the school and was found wounded by police from a self-inflicted gunshot. She died on her way to a local hospital. Barnes said that a second-grade student was the one who called 911 to the school.
