DEFOREST, Wis. -- DeForest Area High School was closed Tuesday after school officials found a threatening note, but officials said the school will reopen on Wednesday.

Officials said that the note, which was found on Monday afternoon in the school, said that there would be a bomb in a boys' restroom.

School officials, along with the DeForest Police Department, were unable to determine whether the threat had merit. As a precaution, officials made the decision to cancel all classes, events and after-school activities Tuesday at the high school.

On Tuesday, the DeForest police, along with school administrators and a canine unit from the University of Wisconsin-Madison, searched the entire high school and grounds, and did not find any signs of explosive devices. Based on the search and the status of the investigation, school officials and law enforcement personnel said they feel confident that they can reopen the school Wednesday.

School officials continue to work with the police department in the investigation and are jointly pursuing all leads.

High school principal Tim Onsager reiterated the seriousness of the incident and is increasing precautionary measures at the high school as the investigation continues.

Tuesday's cancellation affected only the high school and all other DeForest schools remained open.

Police and school officials are encouraging anyone with information about the incident to contact the DeForest Police Department.