UPDATE 1:15 p.m. - SPARKS, Nev. (AP) — Police say it was a student who opened fire at a Nevada middle school today, killing a staff member who was trying to protect other children.

The suspected gunman also is dead, but authorities say no shots were fired by law enforcement, though more than 150 officers responded.

The shooting erupted outside Sparks Middle School shortly before classes began this morning. Two other students were critically injured in the incident. They were both taken to a nearby hospital, where one is out of surgery. Police say the other as doing well.

SPARKS, Nev. (AP) — Police say two people are dead and two more are injured in a shooting at Sparks Middle School in northern Nevada Monday morning.

Washoe County School District Police didn't immediately offer details of the identities of the dead. They said the school is "all clear" and the suspect is "down," but offered no further details.

Spokeswoman Angela Rambo of Renown Regional Medical Center says two boys are in critical condition.

Washoe County School District spokesman Charles Rahn says the middle school and next door Agnes Risley Elementary School have been evacuated to Sparks High School. Rahn said the middle and elementary schools will be closed Monday.

Sparks is a city just east of Reno.