Aside from the manifesto that investigators are still combing through to confirm authenticity, The Buffalo News said police in 2021 were notified when Gendron threatened violence to others at his local high school.
“A school official reported that this very troubled young man had made statements indicating that he wanted to do a shooting, either at a graduation ceremony, or sometime after,” a law enforcement official familiar with the case told the local paper.
At the time, NY State Police investigated Gendron under the section of state mental health laws, and he was referred for a mental health evaluation.
The Biden administration responded to the mass shooting, saying, “A racially motivated hate crime is abhorrent to the very fabric of this nation. Any act of domestic terrorism, including an act perpetrated in the name of a repugnant white nationalist ideology, is antithetical to everything we stand for in America. Hate must have no safe harbor. We must do everything in our power to end hate-fueled domestic terrorism.”
Hellbound and Down 