Four buildings on The Ohio State University campus were evacuated today after the university received an anonymous message that explosives were placed in the buildings. The buildings are the William Oxley Thompson Memorial Library, the McPherson Chemical Lab, Smith Laboratory and Scott Laboratory. Classes in the three academic buildings involved were canceled, and all four buildings were closed until at least 5 p.m. or until the investigation is complete, according to Vernon Baisden, the university's director of public safety.
 
The university was notified of the threat at 8:19 a.m. and activated its Buckeye Alert System at 8:41 a.m., according to a message posted on the Ohio State website.
 
Local, state and federal authorities were assisting in the investigation, Baisden said, but he said officials couldn't release details about specifics.