Alex Haney, a fine arts student at Ryerson who operates the Transgender community channel, discovered the post Wednesday morning and alerted Toronto police to it.
“All I did was tell police about an email,” he wrote in an email. “I just don’t want to sensationalize this any more.”
“He was thinking of plans in his head for how to carry out hurting people in his school, and that it would have been easy to bomb the place, but he just didn’t have the stuff for a bomb,” Haney said, describing the post’s content.
The post said, in part: “I now literally have a plan of seriously hurting … killing … murdering people in my high school … I WORK at the high school as a student teacher basically … which is why no one can find out about me somewhat accidentally planning to blow up the school …”
The post also said it would be “super easy” to do.
In a news conference Thursday, Sheriff Joe Arpaio said Toronto police acted swiftly to find out where the message originated.
Within hours of contacting the sheriff’s office, deputies arrested the girl, a student and teacher assistant at Red Mountain High School in Mesa.
“She said that she planned an attack well in advance of Friday’s shooting that occurred in Connecticut,” Arpaio told reporters. “She said she’s thought about killing for a while.”
Arpaio said the girl, whose parents said had been struggling with mental illness and seeing a psychiatrist, knew the high school facilities well. Police were lucky to have gotten the tip when they did, he said.
“If this went along without any detection, who knows, two years from now, one year from now, what would snap in that young person’s mind,” he said. “It almost meets the profile of what happened in Connecticut.”