Image: Memorial outside Millard South High School
Dave Weaver  /  AP
A memorial is arranged in front of Millard South High School on Thursday in Omaha, Neb., a day after a student shot and killed one administrator and wounded another.
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updated 1/7/2011 2:53:45 AM ET 2011-01-07T07:53:45

Hours before he opened fire on two principals at his high school, a Nebraska teenager calmly accepted a suspension for driving on an athletic field. He went home to speak with his father and some friends — all the while giving no hint of turning violent, police said Thursday.

But after his father left to run errands, 17-year-old Robert Butler Jr. took a handgun from a closet and headed back to the school to confront the administrator who had punished him.

Butler, whose father is a detective for the Omaha Police Department, asked to see the assistant principal and fatally shot her in her office with his father's service weapon. He then wounded the principal and fled before killing himself.

Authorities on Thursday outlined the events that led up to the shooting, which unfolded at Millard South High School on the first day of class after holiday break.

Butler had transferred to Omaha in the fall from a school in Lincoln, about 50 miles away. On New Year's Day, he had been cited for criminal trespassing after driving his car on the school's football field and track, police said.

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Butler was called out of class at 8:10 a.m. Wednesday to meet with Assistant Principal Vicki Kaspar. The two talked in her office, and he was escorted out of the school at 9:23 a.m., police said.

Calm
Butler remained calm after learning of the suspension.

"He wasn't acting like an out-of-control student at all," Police Chief Alex Hayes said. The teen received a ride home, where he talked to his father and spoke with some friends by phone.

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Butler's parents decided to transfer him to Omaha because he was having disciplinary problems in Lincoln and had not been listening to his mother, who is divorced from Butler's father and remarried, Hayes said.

Butler's father didn't have any reason to expect his son would turn violent because the teen did not seem distraught about the suspension and had no history of mental illness.

"He was disappointed with the discipline, but he wasn't acting angry," Hayes said.

Superintendent Keith Lutz would not say exactly how long Butler was to be suspended, except to say it would not have exceeded 19 days. Any penalty longer than 19 days is considered an expulsion in the district.

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Butler's father, who normally works an evening shift, left the home for about 40 minutes to run errands, Butler took his father's handgun out of a closet, posted an ominous message on Facebook predicting he would do "evil things" and broke into a locked garage where his father had stored his car since the trespassing incident.

"When we, as police officers, leave our houses, we do not expect our children to commit crimes like this," Hayes said.

Butler returned to the school at 12:45 p.m., but he still did not seem upset and even took the time to sign in at the administrative office, asking to see Kaspar again.

"He walked into the school just like a normal student. He was not displaying any firearm or weapons," Hayes said.

Four minutes in office
Police said he had been in her office about four minutes with the door closed before he shot her. Butler then walked across a hallway and shot Principal Curtis Case.

Butler also fired at a custodian and missed, and debris hit a school nurse, who was not seriously hurt.

An unarmed security officer was sitting at a desk outside the school's main offices and saw Butler walking away. Butler pointed a gun at the officer, who took cover and wasn't shot.

A school resource officer who heard the gunfire called police.

The security officer gave police Butler's name and described his car, and at 1:35 p.m., authorities received a report of a suspicious vehicle about a mile from the school.

Officers raced to the car and found Butler inside, dead from a self-inflicted gunshot wound.

The gun was his father's service weapon, a .40-caliber semiautomatic pistol that can fire up to 15 rounds. Butler fired seven rounds.

People in the school office initially did not realize the first three shots were from a gun because there had been an earlier birthday party. They thought the noise was from balloons popping.

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After word of the shooting spread, panicked students took shelter in the school's kitchen and in locked classrooms while police checked the building.

Kaspar, 58, died Wednesday evening. Case, 45, was hospitalized in serious but stable condition.

'She will be missed'
The superintendent said Kaspar was a dedicated professional who did her job well.

"She will be missed but certainly not forgotten," Lutz said.

Case was improving and had been able to speak with family members, Lutz added.

Classes were scheduled to resume Friday.

Butler's rambling message on Facebook described his unhappiness with the school but did not supply many details.

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."

Copyright 2011 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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