Two people are dead and two more are injured after a shooting at a US school.
Washoe County School District Police did not immediately offer details of the victims, but said Sparks Middle School in Nevada is "all clear" and the suspect is "down".
A spokeswoman for Renown Regional Medical Centre said two boys are in critical condition.
Police spokesman Charles Rahn said the middle school and next door Agnes Risley Elementary School were evacuated to Sparks High School.
Sparks is a city east of Reno.
The first reports of the shooting came in at about 7.15am, about 15 minutes before classes were to begin.
The shooting happened on the school's campus, but outside the school building itself, according to police.
Governor Brian Sandoval issued a statement after hearing about the shooting.
"I was deeply saddened to learn of the horrific shooting at Sparks Middle School this morning. My administration is receiving regular updates and the Nevada Highway Patrol is assisting at the scene," he said.
Mr Sandoval extended his thoughts and prayers to those affected.
The school, which enrols about 700 students in 7th and 8th grades, has a strict uniform policy that forbids the colours red and blue, commonly associated with rival gangs.
The violence erupted nearly a year after a gunman opened fire at Sandy Hook Elementary School in Newtown, Connecticut, leaving 26 dead.
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.