Louisville mass shooter’s mother called 911 warning that her son was on his way to the bank with a gun

Lisa Sturgeon's call came just minutes before her 25-year-old son shot thirteen people, killing five and injuring eight, before being killed himself.

According to the Daily Mail, Lisa contacted law enforcement after receiving a call from Connor's roommate, Dallas Whelan, who informed her that he had found a note indicating his intention to carry out the attack.

"He's never hurt anyone, he’s a really good kid," Lisa told the 911 operator. "Please don’t punish him ... He's non-violent; he's never done anything wrong."

"I'm sorry, I'm trying to get to my car, I'm shaking," she said upon being told that police had already received numerous calls about Connor and that he was already at the Old National Bank downtown.

Others who called in to report on the active shooter situation expressed their fear as they hid from Connor as he made his way through the bank armed with an AR-15, livestreaming his every move on Instagram.

Lisa questioned where her son could have obtained a firearm, suggesting he may have gotten it from his girlfriend. According to law enforcement, he bought the gun just days before carrying out the shooting.

Connor's parents revealed that he had struggled with "mental health challenges," but stated that "there were never any warning signs or indications he was capable of this shocking act."

An investigation found that Connor, who had sustained numerous concussions during his time as an athlete and even called himself Mr. Concussion on Instagram, said he was "suicidal" while carrying out the attack, and made a series of posts in the weeks prior suggesting he was planning something.

The incident, which occurred just two weeks after three adults and three children were massacred at a Christian school in Nashville, marks the fifteenth mass shooting in the United States so far this year.

A vigil for the victims was held on Wednesday.