A 17-year-old student at Palmer Trinity School was arrested Monday morning after he threatened via text message to kill his classmate.
In the text, Daniel Villacampa wrote that he was going to shoot the victim and then stab him in the neck, police said.
A parent of another student found out about the threat and informed Palmetto Bay police.
Police went to the school and interviewed Villacampa. Police said they found a knife in his possession.
"I carry it all the time, but never pull it out," Villacampa told police, according to a police report.
Villacampa was arrested on charges of aggravated assault with a deadly weapon and possession of a deadly weapon on school property.
A student who spoke to Local 10 News called the incident "sad."
"Just seeing what our world's come to and stuff," student Brock Serrate said. "Hopefully, hoping for a change in the future."