Police say 15-year-old girl behind Wisconsin school shooting

Students board a bus as they leave the shelter following a shooting at the Abundant Life Christian School. Picture: Morry Gash/AP

US authorities say the person they believe carried out a school shooting in the state of Wisconsin was a 15-year-old female pupil.

Wisconsin Police confirmed her identity as 15-year-old student Natalie Rupnow, who went by the name Samantha.