GARDINER — A minor was arrested Friday on a charge of terrorizing after allegedly making a threat towards Gardiner Area High School, according to Patricia Hopkins, superintendent of Maine School Administrative District 11.

Gardiner Area High School closed Friday morning “out of an abundance of caution,” but has since re-opened for staff and athletic activities.

A minor in a different community was arrested in connection of the threat, Hopkins said, and is not a student in the Gardiner-area school district.

Details about the nature of the threat are unclear at this time.

“Thank you to all of the law enforcement officers who investigate this threat and swiftly took action to ensure the safety of our students and staff,” Hopkins said in a statement to the community.

The other MSAD 11 schools — Gardiner Regional Middle School, Pittston-Randolph Consolidated School, Helen Thompson School, River View Community School and Laura E. Richards School — remained open.

MSAD 11 encompasses Gardiner, West Gardiner, Pittston and Randolph.

Gardiner police did not immediately respond to an inquiry.