Knoxville School Shooting

Scenes from the Aug. 21, 2008, shooting at Central High School in Knoxville.

Police block the entrance to Central High School in Knoxville, Tenn., Thursday, Aug. 21, 2008 after a shooting in the school cafeteria. Police say a 16-year-old student was wounded and taken to a local hospital, and they have taken a suspect into custody.

Students and staff wait outside Central High School today in Knoxville after a fatal shooting. One student is confirmed dead and another taken into custody in the incident.

Knoxville Police Department Evidence Specialist Joe Cox carries a small caliber semiautomatic handgun taken from the suspect in a fatal shooting at Central High School on Thursday, Aug. 21, 2008 in Knoxville, Tenn. Authorities say Ryan McDonald, 16, was fatally shot and a fellow student taken into custody.

Rev. Ezra Maize, right, comforts students, Keyana Callier, 16, center, and Miracle Weaver, 17, at Central High School in Knoxville, Tenn., Thursday, Aug. 21, 2008 after a fatal shooting in the school cafeteria. Authorities say Ryan McDonald, 16, was fatally shot and a fellow student taken into custody.

Student Jasmine Irvin, 15, left, is comforted by her mother, Donessa Irvin, at Central High School on Thursday, Aug. 21, 2008 after a shooting in the school cafeteria. Authorities say Ryan McDonald, 16, was fatally shot and a fellow student taken into custody.

Keyana Callier, 16, sits outside Central High School in Knoxville, Tenn., on Thursday, Aug. 21, 2008 after a shooting in the school cafeteria. Authorities say a student, was fatally shot during a dispute and a fellow student taken into custody