A Columbus factory evacuated its employees Friday morning due to unspecified threats.

Columbus Police Department (CPD) Spokesman Sgt. Matt Harris says that management at Toyota Industrial Equipment Manufacturing (TIEM) called for help at approximately 9:30 a.m. after an employee spotted threats written inside of one of the plant’s restrooms. Sgt. Harris says that management evacuated the plant as CPD officers conducted a walk-through of the facility.

Sgt. Harris went on to say that the walk-through turned up nothing suspicious. He adds that operations at TIEM were shut down for about 25 minutes. There are no suspects at this time. Toyota officials have not responded to our request for comment.