Officers found 14 improvised explosive devices while executing a search warrant for a man who had threatened to kill public officials and tried to detonate the devices as he was being arrested, Tennessee authorities said Saturday.

The Polk County Sheriff’s Office said 54-year-old Kevin Wade O’Neal was arrested Friday and charged with 11 counts of attempted first-degree murder for the attempted murders of nine detectives and deputies, 14 counts of possessing prohibited weapons and one count of possessing explosive components.

I will die killing you before I take comfort in life surrendering to your wishes,” suspect Kevin O’Neal allegedly wrote in a social media post.