Security video from inside Covenant School in Nashville, Tennessee, captured the shooter who killed six people, including three children, blasting through a glass door.

Nashville police chief John Drake says that school shooter Audrey Hale was “under doctor’s care for an emotional disorder” and had hidden seven legally purchased weapons at her family home.Chief Drake said that three of the weapons were used in the horrific incident.

If a mass shooting is defined as resulting in the death of four or more people, not including the perpetrator, 175 people have died in 15 such events connected to U.S. schools and colleges — from 1999's Columbine High School massacre to Monday's shooting in Nashville,

Three children and three adults were killed in a shooting at a Nashville school Monday morning, according to police. The shooter was then killed by police on the second floor of the school building at The Covenant School within 15 minutes of the first 911 call.

Authorities said they are trying to determine what prompted a female to open fire at a Christian elementary school in Nashville – one of the few mass shootings in which the suspect is female. "When the officers got to the second level,

The shooter who killed six people at a school in Nashville, Tennessee, on Monday bought seven guns legally and hid them at home, police say. Investigators say the suspect's parents felt the 28-year-old should not own weapons,