A 28-year-old woman, whose identity has yet to be revealed, has died in a shootout with police after killing three children and three adults at a private Christian school in Nashville, Tennessee.

Metro Nashville Police spokesperson Don Aaron revealed some details of the horrific shooting, as he told the media that the woman, who they initially thought was a teen, entered the Covenant School through a side door. She was armed with at least two assault-style rifles and a handgun, and it was revealed that she fired shots on the first and second floors of the school.