Following the tragic shooting at Antioch High School in Nashville, Tennessee, which claimed the life of a 16-year-old student and injured another, investigators have revealed disturbing details about the deceased gunman's online activity. Authorities believe the 17-year-old shooter, identified as Solomon Henderson, was heavily influenced by online material found on websites considered by most to be harmful and objectionable.

The incident unfolded on Wednesday inside the school’s cafeteria. Henderson opened fire with a 9mm pistol, firing ten shots within a mere 16 seconds, killing Josselin Corea Escalante and grazing another 17-year-old student who has since been released from the hospital. Henderson then took his own life.

A memorial was set up outside Antioch High School following the shooting. (AP/George Walker IV)

Prior to the shooting, Henderson reportedly visited a restroom and posted photos to social media. Initial reports suggested Henderson took a bus to school, but police have since confirmed his mother drove him that day. A search of Henderson’s home did not uncover any additional firearms or gun parts. However, investigators discovered two extensive documents, 51 and 288 pages long, believed to have been authored by Henderson on less conventional websites. These documents, along with other recovered evidence, are being scrutinized by homicide detectives, the Specialized Investigations Division, and the FBI.

Law enforcement and concerned community members gathered outside Antioch High School after the shooting. (X/@MNPDNashville)

Students leave Antioch High School in the aftermath of the shooting. (AP Photo/George Walker IV)

The investigation has also revealed the firearm used in the shooting was purchased in Arizona in 2022 and was not reported stolen. The Bureau of Alcohol, Tobacco, Firearms and Explosives is working to trace how the weapon came into Henderson's possession.

If you or someone you know is having thoughts of suicide, please contact the Suicide & Crisis Lifeline at 988 or 1-800-273-TALK (8255).