CAZENOVIA, Wis. -- About 500 students, parents, teachers and community members gathered Friday night under the lights of the Weston High School football field in the rural community of Cazenovia.

VIDEO: Community Holds Candlelight Vigil | VIDEO: Efforts Of Some Prevent Greater Tragedy

But instead of watching the homecoming game that had been scheduled, they mourned the loss of Principal John Klang, who authorities said was shot to death by a student in school earlier in the day.

Instead of watching the Silver Eagles play football, they cried, sang "Amazing Grace," listened to mournful violin passages and spoke fondly of Klang, 49, and also of a student who died early Friday in an unrelated car wreck.

Many wore Weston High sweatshirts and baseball caps in the cold late September wind. Bible passages were read and words of comfort spoken.

The flag at the opposite end zone flew at half staff.

Klang (pictured left) and cusodian Dave Thompson were praised as heroes who prevented greater bloodshed.

Authorities said Thompson confronted the shooter as he entered the school and wrestled a shotgun away from him, but the shooter then pulled out a pistol and Klang managed to wrestle the weapon away even after being mortally wounded.

Becky Jennings, the mother of children who attend the school, said the vigil was meant to offer hope and prayer to a grieving community.

Sauk County investigators said that a 15-year-old boy is in custody. District Attorney Patricia Barrett identified the suspect as Eric Hainstock. Melissa Nigh, the district's dean of students, said that the suspect was a student at the school. Authorities said that Hainstock was taken to a law enforcement facility in Baraboo.

Barrett said Hainstock is being charged with first-degree intentional homicide in adult court.

Barrett said the student apparently had plans involving the principal. She said he told a friend a couple days ago that the principal was not likely to "make it through homecoming."

Sauk County authorities said that they aren't looking for any other suspects at this point, WISC-TV reported.

The school's homecoming game was scheduled for Friday night. The shooting has caused school officials to cancel all events scheduled for this weekend.

Superintendent Terry Milfred said the school will be open to students, parents and community members on Monday from 9 a.m. to 2:30 p.m., for crisis counseling.

Milfred said classes will resume on Tuesday.

Criminal Complaint: Suspect Allegedly Said He Was Teased

According to a criminal complaint, Hainstock said that he had been teased and called names and he felt school personnel wouldn't do anything about it.

The complaint said that Hainstock had received a disciplinary warning from the principal on Thursday for having tobacco on school grounds, and he was likely facing an in-house suspension.

Hainstock (pictured right) told investigators that a group of kids had teased him by calling him "fag" and "faggot" and rubbing up against him. He said that he decided to confront students, teachers and the principal with the guns to make them listen to him.

The complaint said that he pried open his family's gun cabinet, took out a shotgun and then took a handgun from his parent's bedroom.

The complaint said that he shot the principal intentionally three times.

Teen Held In Shooting Allegedly Bragged About Getting Into Trouble

A neighbor said Hainstock was a normal teenager but often bragged about getting into trouble.

Court records said Hainstock told police he gunned down Weston Schools Principal John Klang before classes began Friday because he was upset with a reprimand Klang had given him.

Hainstock has been charged as an adult with first-degree intentional homicide.

Neighbor Alan Hahn said he has known the Hainstocks for nearly a decade and sometimes gave Eric a ride home from school.

He said the teen enjoyed demolition derbies, racing a remote-control car on the country roads around his home and visiting his grandparents.

He said he liked to show off and talked about how he got in trouble at school.

"He seems quiet. I don't see him too often, see him in the halls," said Steven McGlynn, a senior at Weston School. "(I) didn't expect him to do this. I mean, he's different, but I'd never think he'd do this."

High School Student Killed In Car Crash

In an unrelated incident, a student from the school was killed on Friday in a car crash.

Sheriff's authorities said that the victim was Erick Fichtel, 16, a junior at Weston.

According to the Sauk County Sheriff's Department, a deputy tried to stop Fichtel's car for speeding before 8 a.m. The deputy said that he lost sight of the vehicle, but when he came upon the intersection of Harris Road and Highway K, he saw the vehicle crashed into the shoulder, WISC-TV reported.

Sheriff Randy Stammen said that Fichtel was driving, and he wasn't wearing a seat belt. The department said that a passenger in the vehicle who was wearing a seat belt wasn't seriously injured.

Fichtel was taken by MedFlight to Madison, but he was pronounced dead.

Milfred said the class schedule for Tuesday might be changed pending funeral arrangements for the student.

The school is near the town of Cazenovia in Sauk County. It is a community of about 300 about one hour northwest of Madison.

Stay tuned for continuing coverage.