Guns don't kill people, bullets do.

From CNN.com in Jacksboro, TN, population 2,000, 35 miles northwest of Knoxville:

One dead in Tennessee school shooting

Sheriff: Student suspected in shooting of three administrators

JACKSBORO, Tennessee (CNN) -- A student opened fire Tuesday afternoon on a principal and two assistant principals at a high school in Jacksboro, Tennessee, killing one of them, the sheriff said.

The suspect was taken into custody, authorities said.

No students were injured, and Campbell County Comprehensive High School was locked down immediately after the shootings, said Judy Blevens, director of Campbell County schools. About 1,400 students are enrolled in the school.

Campbell County Sheriff Ron McClellan identified the slain assistant principal as Ken Bruce, 48.

McClellan, who was at Bruce's side when he died, said it's not clear how many times the assistant principal was shot. McClellan said he saw only one entrance wound.

Two other victims -- Principal Gary Seale and Assistant Principal Jim Pierce, who also is a track coach -- were airlifted to the University of Tennessee Medical Center. Pierce was in critical condition and Seale was in serious condition, hospital spokeswoman Lisa McNeal said Tuesday afternoon.

The 15-year-old student allegedly slipped a gun under a napkin and fired at administrators in a common area, CNN affiliate WATE reported.

Bruce was taken to St. Mary's Medical Center in LaFollette. The suspect also was taken there for treatment of a minor injury.

Police already have taken statements from the suspect, McClellan said, and once he's given medical clearance authorities plan to move him to a secure facility.

"I have no information firsthand of what type of motive or what would cause this individual to do this," McClellan told WATE, adding that the student's father had arrived at St. Mary's with a lawyer.

CNN affiliate WBIR interviewed a longtime friend of one of the administrators who said "everybody's very sad" and "in disbelief" after the attack.

As word of the shooting spread, a throng of concerned parents gathered outside the school. Authorities tried to assure them the students were OK and that dozens of police and deputies had secured the scene.

Buses and vehicles eventually were allowed onto campus to pick up students.