OMAHA, Nebraska — The son of a police detective opened fire at a Nebraska high school Wednesday, wounding the principal and assistant principal and forcing panicked students to take cover in the kitchen of the building just as they returned from a holiday break, authorities said.
The gunman, who had attended the school for no more than two months, fled from the scene and fatally shot himself in his car about a mile (kilometer) away.
Authorities did not know why the suspect, identified as 17-year-old Robert Butler Jr., targeted the administrators, who were hospitalized.
In a rambling Facebook post filled with expletives, Butler warned Wednesday that people would hear about the "evil" things he did and said the school drove him to violence.
He wrote that the Omaha school was worse than his previous one, and that the new city had changed him. He apologized and said he wanted people to remember him for who he was before affecting "the lives of the families I ruined." The post ended with "goodbye."