The mother of a 14-year-old who police say planned to shoot multiple classmates at his Pennsylvania high school was charged on Monday in connection to the foiled plot, authorities said.

Lenora Ann Hendrix, of Markleysburg, Pennsylvania, was charged with knowingly and intentionally delivering or providing a firearm to a minor, according to  ABC News , after her son threatened to carry out a mass shooting at Uniontown High School last month.

The teen, who wasn't indentified, was taken into police custody on Jan. 25. A witness reported that she overheard the suspect saying he would kill four classmates he disliked, officials said.

Police later obtained a search warrant for the suspect's home and recovered from his bedroom a semi-automatic rifle, a shotgun, two machetes, throwing knives, two lever-action rifles, a revolver, a cross bow, "and bulk ammunition for all of the weapons," Fayette County District Attorney Richard Bower said at a news conference in January.

When asked about the weapons, Hendrix told police that she permitted her son to store firearms in his bedroom to teach him responsibility and to "let him grow up," according to a criminal complaint.