High school principal shot by 17 year old student

The 17-year-old student, Robert Butler, Jr., shot the principal and assistant principal, then left the school and killed himself in his car for a few blocks away.

Butler, who transferred in November to Millard South High school, left a suicide note on a social media location that said the school "drove me to this."

"Everybody that used to know me I am shy but Omaha changed me and (expletive) me up. And the school I attend is even worse Ur going to hear about the evil (expletive) I did but that (expletive) school drove me to this. I won’t u guys to remember me for who I was before this ik. I greatly affected the lives of the families bust but I'm sorry. Goodbye," Butler posted on his Facebook page.

Butler had been suspended from the school on Wednesday morning, when lessons resumed after the winter break, for using his vehicle to tear up the football field, local media reported.

Butler's motive was under investigation, Omaha Police Chief Alex Hayes told reporters, but his father was a police officer, which gave the son right to use the firearms.

"The disaster has hit the Omaha Police Department as the suspect's father is an Omaha Police detective," Hayes said. "We are talking to him."

Assistant principal Vicki Caspar was critically injured in the shooting and died on Wednesday evening at a local hospital, a police statement said. She was an expert administrator at the school, Millard Schools Superintendent Keith Lutz said.

The principal, Curtis Case, was in secure but serious condition at Creighton University Medical Center, according to spokeswoman Kelsey Archer. He had been worked at the school for five or six years, Lutz said.

The school was ready with security cameras and guards and performed safety drills, Lutz said. "But nothing prepares you," he said.