The police in Wisconsin are working to establish a motive for the attack, which left a student and teacher dead and six others injured.

A teenage student and teacher were killed, and six others were injured, when a shooter opened fire at a Christian school in Madison Monday morning. The suspected shooter, a 15-year-old student at the school,

The Associated Press, CNN and the New York Times reported Monday evening that the shooter was a female student, citing unnamed law enforcement officials. At a press conference earlier in the afternoon, Madison Police Chief Shon Barnes declined to release the student's age or gender.