The Dysart Unified School District and the El Mirage Police Department are investigating threats sent to students.
According to the Dysart Unified School District, the district and Dysart High School were notified overnight of the threatening messages sent to students.
El Mirage police said they were told about the threats at 11 p.m. Wednesday.
The district released a statement Thursday saying police discovered similar messages were sent using the same phone number to several schools across the country.
Police, the district said, do not view the messages as a "viable threat."
According to El Mirage PD, the threats appear to have been made through the social media platform, Snapchat, at schools in Arizona and Nevada.
Police said they don't "appear to be credible" at this time, but will provided extra patrol officers in the Dysart HS area.
Police did not name any other Arizona school that may have received threats.
"Both the school and district take claims like those in this post seriously," the district said, "and will continue to work with law enforcement to investigate the source of the message."
We were notified overnight of messages to students regarding a potential threat to the high school. Administration immediately began working with the @ElMiragePolice. Full statement in image. https://t.co/i4RpKxGEI3 pic.twitter.com/JxyZw8MpF2— Dysart District (@DysartUSD) October 5, 2017