NASHVILLE, Tenn. (WSMV) - Update: WSMV4 Investigates has confirmed with the Metro Nashville Police Department that two guns were removed from the home of Antioch High School shooter Solomon Henderson in 2023. An MNPD spokesman confirms that the two guns belonged to adults and have remained in the department’s property room since then.

The shooter was “significantly influenced by web-based material, especially that found on non-traditional sites that most would find harmful and objectionable,” police said.

"Based on the location of the shooter and the position of the weapon, it did not activate the system," a district official told the USA TODAY Network.

Police said the suspected shooter sustained a self-inflicted gunshot wound and the school district said Antioch High School is on lockdown.

A 17-year-old male student armed with a pistol opened fire in a high school cafeteria in Nashville, Tennessee, on Wednesday, fatally shooting a 16-year-old female student and injuring a male student before killing himself,

Gunfire erupted just after 11 a.m. Wednesday at Antioch High School – about 45 minutes southeast of downtown Nashville – when 17-year-old Solomon Henderson “confronted” the victim before firing

A student shot at least two other students Wednesday at Antioch High School outside Nashville, Tennessee, police said. The shooter then shot himself, according to police.

Police responded to a shooting at Antioch High School in Nashville, Tennessee. Police told CBS News the shooting happened in the school cafeteria.

Superintendent for Metro Nashville Public Schools Adrienne Battle said the school uses a weapons detection system called Omnilert.

The tragic shooting at Antioch High School has sparked concerns over the effectiveness of its AI-based weapons detection system, Omnilert.

The fear and the trauma of the Antioch High School shooting can only be described as a nightmare. But it's happened one other time in Metro Nashville Public Schools history.