New Updates: Motive 'combination of factors' in Wisconsin school shooting

Police say it appears the motive in a shooting that left two dead, along with the suspect, at a private school in Wisconsin was due to "a combination of factors".

Madison Police Chief Shon Barnes didn't provide specifics on Tuesday as to what allegedly led a 15-year-old girl, named by authorities as Natalie Rupnow, to fire shots at the Abundant Life Christian School in the city of Madison.

Six people were also injured in Monday's shooting. Rupnow is believed to have died from a self-inflicted gunshot wound.

Chief Barnes said during a press conference that investigators are asking anyone who knew the suspect to come forward with information.