SPARKS, Nev. (AP) -- A student at a Nevada middle school opened fire on campus just before the starting bell Monday, wounding two boys and killing a math teacher who was trying to protect children from their gun-wielding classmate.
Teacher Michael Landsberry was being hailed for his actions outside Sparks Middle School, where 20 to 30 horrified students witnessed the shooting as they returned to classes from a weeklong fall break.
"In my estimation, he is a hero. ... We do know he was trying to intervene," Reno Deputy Police Chief Tom Robinson said.
The unidentified shooter was killed along with Landsberry, a 45-year-old military veteran who leaves behind a wife and two stepdaughters. The motive for the shooting is still unknown. One of the wounded students is out of surgery and the other is doing well, police said.
It's unclear whether the student committed suicide, but authorities say no shots were fired by law enforcement. Police said between 150 and 200 officers, including some from as far as 60 miles away, responded to the shooting.
The violence erupted nearly a year after a gunman shocked the nation by opening fire in Sandy Hook Elementary School in Newtown, Conn., leaving 26 dead. The Dec. 14 shooting ignited debate over how best to protect the nation's schools and whether armed teachers should be part of that equation.
On his school website, Landsberry posted a picture of a brown bear and took on a tough-love tone, telling students, "I have one classroom rule and it is very simple: 'Thou Shall Not Annoy Mr. L.'"
"The kids loved him," said his sister-in-law Chanda Landsberry.
She added his life could be summed up by his love of his family, students and country.
"To hear that he was trying to stop that is not surprising by any means," she said.
Students from the middle school and neighboring elementary school were evacuated to the nearby high school, and classes were canceled. The middle school will remain closed for the week.
"As you can imagine, the best description is chaos," Robinson said. "It's too early to say whether he was targeting people or going on an indiscriminate shooting spree."
At the evacuation center, parents comforted their children.
"We came flying down here to get our kids," said Mike Fiorica, whose nephew attends the school. "It's really chaotic. You can imagine how parents are feeling. You don't know if your kid's OK."
The shooting happened on the school's campus and ended outside the school building itself, according to police.
"I was deeply saddened to learn of the horrific shooting at Sparks Middle School this morning," Nevada Gov. Brian Sandoval said in a statement extending his thoughts and prayers to those affected.
About 700 students in 7th and 8th grades are enrolled at the school, located in a working class neighborhood.
"It's not supposed to happen here," Chanda Landsberry said. "We're just Sparks -- little Sparks, Nev. It's unreal."
Senate Majority Leader Harry Reid, D-Nevada, offered his condolences to those who experienced a "traumatic morning."
"No words of condolence could possibly ease the pain, but I hope it is some small comfort that Nevada mourns with them," Reid said in a statement.
In a statement on the website of Sandy Hook Promise, a gun control advocacy group, Nicole Hockley, whose son Dylan was killed in the shooting said, "It's moments like this that demand that we unite as parents to find commonsense solutions that keep our children -- all children -- safe, and prevent these tragedies from happening again and again."
The Washoe County School District held a session in the spring in light of the Connecticut tragedy to educate parents on what safety measures the district takes.
Sparks, a city of roughly 90,000 that sprung out of the railway industry, lies just east of Reno.
Mayor Geno Martini spoke at a morning press conference to assure residents that the community was safe.
"It's a tragic day in the city of Sparks," he said. "This is just an isolated incident."
Associated Press writer Michelle Rindels in Las Vegas and news researcher Rhonda Shafner in New York contributed to this report.