Police said three students and a non-student carved their initials into an exterior archway at Old Central on Oct. 31. Their names were not available.

The men were not arrested at the time, but the campus police department is filing affidavits with the Payne County District Attorney's Office, Capt. Richard Atkins said. Charges of destruction of public property are a possibility, he indicated.

Old Central is more than 100 years old and was recently renovated after decades of use as a higher education museum. It now houses the school's honors college.

The group apparently walked into a construction zone and carved the letters into a stone archway at the front entrance. Work crews are still finishing exterior work on the building, Atkins said.

Atkins said he didn't have a damage estimate, but the vandalism appears to be repairable.