A Wisconsin school shooter who killed two was a girl, police sources say. The unidentified female shooter killed a student, teacher and then herself at Abundant Life Christian School in Madison shortly before 11am Monday. Police have yet to reveal the identity of the shooter, her victims or a possible motive. Wisconsin police have refused to release the age of the teenage student who opened fire at Abundant Life Christian School, killing two. At least two students remain critically injured in hospital. Follow along for DailyMail.com's live updates of the ongoing situation.