NASHVILLE, Tenn. (AP) — Authorities say they believe the 28-year-old female shooter who killed three children and three adults at a private Christian school in Nashville was a former student. The female suspect was killed by police during a confrontation. The shooting occurred Monday at The Covenant School. Police said the shooter was armed with two “assault-type” rifles and a pistol. The Covenant School has had an enrollment of about 200 students from preschool to sixth grade in recent years. The killings come as communities around the nation are reeling from a spate of school violence. (Photo: AP)