MAY 8 UPDATE:

Four teenagers were involved in an incident involving reports of a weapon that prompted a lockdown at North Valleys High School on Thursday, with one being arrested for trespassing.

During the course of their investigation, law enforcement heard reports of a weapon, moving the school from a secured campus to a lockdown, according to a release from North Valleys High School.

The investigation into the incident is ongoing.

The Washoe County Sheriff's Office released a statement about their involvement in providing assistance in the incident on Friday evening.

The Sheriff's Office received a call to assist Washoe County School Police around 2 p.m., according to the statement released.

The Sheriff's Office conducted a search of the campus to identify any potential or active threat using teams of deputies, a K9 team conducting an article search for a possible weapon, and a drone providing aerial support during the search of the campus.

No arrests were made by the Washoe County Sheriff’s Office related to its assistance.

ORIGINAL ARTICLE:

North Valleys High School was placed on a lockdown due to a nearby off-campus disturbance for nearly two hours on Thursday.

The Washoe County School District initially announced a secured campus at 1:54 p.m. on Thursday, but then upgraded the school's status to a lockdown less than 10 minutes later. 

At 3:45 p.m., the Washoe County School District on its website said that North Valleys High School had resumed normal operations and students had been released for the day. Bus students would remain in the cafeteria/bus area until their bus returned.

Washoe County School District Police is investigating the incident.

School Police said that the students and faculty were safe, and they were following lockdown protocol.

If you have any information that can help authorities, call or text your anonymous tip to Secret Witness at 775-322-4900. 

Earlier in the day, Echo Loder Elementary School and Innovations High School were placed under separate temporary secured campuses. 

An email has been sent to parents at North Valleys High School:

Hello, North Valleys High School families,

This is Principal Tomas Macaluso, and I want you to be aware that our school was placed on a lockdown today, Thursday, May 7, when we learned of a possible threat near or on our campus.

We declared a lockdown and are keeping our students and staff in their classrooms while school police and the Washoe County Sheriff’s Office conducts a thorough search of the area.

Students are safe, and are being held on campus until School Police allow their release. Please don’t come to the building until you receive further information from the district.

I appreciate your concern and cooperation, and I thank you for your patience as we work through this situation.

Once again—everyone is safe. We will contact you once students are cleared for release.

Thank you.