Investigators said on Monday that the Covenant School shooter in Nashville, Tennessee, fired 152 shots before being apprehended by officers.
Further details on Audrey Hale, the 28-year-old gunman who entered an elementary school on March 27 and killed six people, were revealed by detectives from the Metropolitan Nashville Police Department.
According to the police, Hale fired 152 shots, including 26 nine millimeter handgun rounds and 126 rounds with a 5.56 rifle.
Hale also shot the school’s glass doors with a firearm to enter through them.
The motivation for the shooting is still under investigation.
‘In the collective writings by Hale found in her vehicle in the school parking lot, and others later found in the bedroom of her home, she documented, in journals, her planning over a period of months to commit mass murder at The Covenant School,’ police stated.
Police previously confirmed that Hale attended the Covenant School prior to the shooting.
Investigators have not released the writings collected from the shooter, which are now being analyzed by the Federal Bureau of Investigation’s Behavioral Analysis Unit in Quantico, Virginia.
‘It is known that Hale considered the actions of other mass murderers,’ investigators said on Monday.
Hale was eventually killed by two Nashville police officers, Rex Engelbert and Michael Collazo, who fired four rounds each.
The six victims from the shooting included three 9-year-old students, later identified as Evelyn Dieckhaus, William Kinney, and Hallie Scruggs.
The adult victims included substitute teacher Cynthia Peak, custodian Mike Hill, and head teacher Dr Katherine Koonce.