A South Florida man was arrested after police found handwritten threats in his car outlining plans to “kill everyone” at his former high school and others across multiple states on his 22nd birthday.
Henry Horton IV, 19, was pulled over in Jupiter on Sept. 27 for a broken headlight when a search of the vehicle uncovered the alleged plans, WBPF reports.
One of the notes read, “kill everyone at OHS with my guns.” Horton allegedly confessed that it referred to Okeechobee High School, where he graduated in May 2022, according to the probable cause affidavit.
Police said the notes ultimately outlined a plan for Horton to kill an administrator at the school, along with 14 others on the campus on January 2, 2026, the day he turns 22.
An investigation into his phone and Discord account also uncovered details for mass murder attacks in multiple states, plans to build a bomb, and plans to kill his stepmother.
During an interview with Horton, the suspect told police he was in Palm Beach County to do reconnaissance on the El Rey Jesus Church, in Miami, as part of an attack he was planning there, according to the Palm Beach County Sheriff’s Office.
Horton also claimed to have done recon work at the Marjory Stoneman Douglas High School, where 17 people were killed during a mass shooting in 2018. Police said his car was seen in Parkland on Sept. 11.
Along with his notes, police also seized a 9MM handgun Horton said he stole from his mother.
Horton, who has a history of mental health problems, was transported to a hospital under Florida’s Baker Act, where he remained committed until he was arrested on Thursday.
His mother, Marcie Horton, said she couldn’t excuse her son’s actions but asked officials to allow him to receive the mental health treatment he needs rather than face charges over the disturbing plans.
She told WPF that her son was a “good kid” and would never have actually carried out the plan.
“It’s no excuse for what he wrote,” she said. “I’m not saying that, but he needs help.”
Stepmother Alisha Horton, who was included as a would-be victim in Horton’s plans, echoed her stepson’s innocence.
“Henry isn’t going to hurt me,” she told the local outlet. “He would never… He needs to be treated for a mental disability instead of as a criminal.”
Horton was charged with intimidation with written threats to kill or harm another individual.
He was booked at the Palm Beach County Jail and remains held on a $1 million bond. He is scheduled to appear in court on Nov. 6.
The Okeechobee County School District did not immediately respond to The Post’s request for comment.