Sparks Middle School shooting

A Sparks Middle School student cries and is comforted after being released from Agnes Risley Elementary School, where some students were taken after a shooting at the middle school in Sparks, Nev.

A Sparks Middle School student, back to camera, cries with family members after being released from Agnes Risley Elementary School on Monday in Sparks, Nev., after a shooting at Sparks Middle School.

Police secure the scene near Sparks Middle School after a shooting in Sparks, Nev., on Monday. Authorities are reporting that two people were killed and two wounded at the Nevada middle school.   (Kevin Clifford / Associated Press)

A Sparks Middle School student and her mother walk near Agnes Risley Elementary School after students were evacuated to the school after a shooting at Sparks Middle School in Sparks, Nev., on Monday.

Police gather near Sparks Middle School after a shooting at the school Monday in Reno, Nev.   (Jerry Davis / Associated Press)

SWAT team members secure the scene near Sparks Middle School in Sparks, Nev., after a shooting there on Monday. Authorities are reporting that two people were killed and two wounded at the Nevada middle school.