Police say the parents of a 12-year-old Nevada boy who killed a math teacher at his school could face charges.

Sparks Middle School (KOLO TV)

Police say the seventh-grader got the 9 mm semi-automatic handgun from his home and on Monday went on a schoolyard rampage at Sparks Middle School, wounding two boys and killing math teacher Michael Landsberry.

The boy then shot himself in the head.

(Copyright 2013 The Associated Press. All Rights Reserved)