VIDEO: Full press conference
A manifesto found on the suspects body revealed a specific plan that detailed his targets and intentions. Among them, names of classmates he wanted to harm. On the list, the name of the first student stabbed in a second floor classroom on Wednesday. Also in Muhammad's plan was a script and intentions to take out law enforcement officers.
Detectives say Muhammed was mad after being kicked out of a student group meeting.
Deputies say the latest revelations are further proof that the suspect had a personal vendetta and was not a political or religious statement.
According to the sheriff this was an 18-year-old with typical problems who took them to the extreme.