MADISON, Minn. — A second threat of violence in as many months made at the Lac qui Parle Valley High School led school board members to close all of the district’s schools Thursday and Friday.

Lac qui Parle County Sheriff Allen Anderson said the threat discovered after the school day on Wednesday is a new threat, and due to the nature and time frame of it, the school board decided to close all school buildings on both Thursday and Friday.

A virtual school day is being held Friday. Classes will resume Monday.

Additional law enforcement officers will be present at the school to assure the safety of students and staff, the sheriff said.

This new threat follows one made in January in which a student left a message on a bathroom stall threatening to “shoot up school on February 28.” Because of that, school board members decided to close the schools on both Thursday and Friday, which is the 28th.

Anderson said the person responsible for the first threat was identified, admitted to it and is no longer attending the school.

Multiple officers are involved in this second investigation. They will continue to follow up with interviews of students, according to the sheriff. He said a suspect is not identified at this time. He does not believe this second threat is related to the first threat. He said it’s possible that it’s a copycat threat, but does not know if that is the case.

Officers went through the district’s schools Thursday. There was no bomb found, he said.

The officers used the opportunity to get things in order for improved security when classes resume Monday. Officers were able to get a lot accomplished in terms of assuring that the school will remain a safe environment for students and staff, according to Anderson.

“That’s the main goal,” he said. "We want everybody to feel they can be safe at school.”