Lewiston High School is closed Wednesday after the superintendent said someone made a threat to the school.
Superintendent Bill Webster said the threat was made by a student who is now in custody.
Officials believe the threat is false but classes are canceled as a precaution.
Lewiston Regional Technical Center is also closed Wednesday because of the threat.
An update on whether the closure will also affect after school activities is expected later on Wednesday.
Watch bangordailynews.com for updates.