Police are investigating a shooting at Sparks Middle School in northern Nevada that has injured at least two boys.

A Sparks police dispatcher says the call came in at 7:16 a.m. Monday.

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

Washoe County School District spokesman Charles Rahn says the middle school and the adjacent 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.