Washoe County School District School Police say they have arrested a juvenile in connection with a threat of physical violence targeting Shaw Middle School, which was posted on social media Tuesday night.

The name of the suspect will not be publicly released because of the suspect’s age. The juvenile has been taken into custody and is currently being held at Jan Evans Juvenile Justice Center in Reno.

The case will now be sent to the Washoe County District Attorney’s Office for review.

While School Police do not believe this threat was credible, this social media posting did result in approximately 480 Shaw Middle School students—about half of the student body—staying home from classes. Every effort was made to contact the school community with accurate information about law enforcement efforts to protect the students, staff members, and school property this morning via a Connect Ed call.

“We work closely with other local law enforcement agencies, and were assisted by School Secret Witness in this case,” said WCSD School Police Chief Jason Trevino. “We kept a high profile at the school today, and as we continue to investigate this case, we urge all parents and guardians to closely monitor their children’s social media activity. These are extremely serious charges that resulted from an extremely serious action on the part of a juvenile. We consistently educate young people about the consequences of their actions, and this is yet another example of an action that can carry severe consequences.”