Agnes Risley Elementary School after a shooting Monday, October 21, at nearby Sparks Middle School in Sparks, Nevada. A student opened fire at the middle school, police said, killing a teacher and wounding two students.

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Nevada middle school shooting – Mike Landsberry (pictured), a math teacher at the school, was killed in the shooting, Sparks Mayor Geno Martini told CNN. In addition to his work as a teacher, Landsberry also had served in the Marines, including several tours in Afghanistan, his brother, Reggie, told "Anderson Cooper 360."

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Nevada middle school shooting – The suspect in the shooting is also dead, said Washoe County School District Police Chief Mike Mieras. Authorities said it was toosoon to say whether the suspect was killed by a self-inflicted wound or by law enforcement.

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Nevada middle school shooting – Parents escort a child from Agnes Risley Elementary School after the shooting.

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Nevada middle school shooting – Authorities said students were being taken to a nearby high school to meet their parents. School has been canceled for the week at both the elementary and middle schools, officials said.

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Nevada middle school shooting – Law enforcement officers gather in the middle school parking lot after the shooting.

Mason said the incident began when he heard a few gunshots -- he thought they were in the distance -- as