An Indiana mother who tipped off police to her 14-year-old son's school shooting plot that resulted in his death is now facing six felony charges.

Mary York, 43, has been charged with five counts of neglect of a dependent, one count of dangerous control of a child, and one misdemeanor count of criminal recklessness.

Court documents obtained by Indianapolis station WXIN said York withdrew her son from a mental-health treatment program after 10 days, because it wasn't covered by insurance and she couldn't afford it.

York told media that her son never expressed homicidal intentions to her and that no doctor informed her of her son's diagnosis.

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An Indiana mother who warned authorities that her 14-year-old son was about to shoot up a middle school is now facing six felony charges in connection with the incident.

Mary York, 43, called police on December 13, 2018, telling them her son had taken her boyfriend hostage at gunpoint and was about to head for his former middle school, where he had been bullied in the past.

When the child arrived, he was armed with a rifle, pistol, ammunition, Molotov cocktails, and a written plan, according to Indiana State Police. But authorities, having already been warned by the child's mother, got to the school before the boy and locked it down.

The boy shot through the glass and entered the building, before police officers confronted him. After a shootout, the boy turned his gun on himself and pulled the trigger, police said. He died at the scene.

No other students, staff members, or police officers were injured in the incident.

In a press conference after the attempted school shooting, Capt. David Bursten credited the tipster, York, who warned police of the threat.

"We are very, very grateful to that person who made that call," Bursten said. "Had they not made that call, there is no doubt in my mind that we would be having a much different conversation here right now."

The boy's name still has not been released due to his age.

Read more: America can't just arrest its way out of a mass shooting epidemic, experts say

Authorities are faulting her for not adequately treating her son's mental illness

Court records viewed by Insider show that York has been charged with five counts of neglect of a dependent, one count of dangerous control of a child, and one misdemeanor count of criminal recklessness.

A probable cause affidavit obtained by the Indianapolis station WXIN said York withdrew her son from a mental-health treatment program after 10 days, because it wasn't covered by insurance and she couldn't afford it.

York has told media she shouldn't be blamed for the shooting attempt. YouTube/WTHR

The documents showed that the boy was depressed, had suicidal thoughts, heard voices, and had expressed homicidal urges against his bullies.

Read more: Dozens have been arrested over mass shooting threats since El Paso and Dayton. But experts say a deterrence strategy could do more harm than good.

The affidavit said York didn't make her son take his prescribed medication because he complained it made him feel "weird," and that there were no documents to prove York took action to address bullying against her son.

York told news outlets that she shouldn't be held accountable for her son's actions. She added that he never expressed homicidal intentions to her and that no doctor informed her of her son's diagnosis.

"They're blaming me and my son — they need to be blaming this school system and the medical facility that let me take him out," she told WISH.

Court records show that a warrant for York's arrest was issued on Tuesday. York was not yet in custody as of Tuesday afternoon.