COLUMBUS, Ohio (CBS/WBNS) Four buildings on the Ohio State University campus, including the William Oxley Thompson Memorial Library, were evacuated Tuesday because of an e-mailed bomb threat.
The threat was sent to the FBI's Columbus headquarters, CBS affiliate WBNS reports.
Police used the Buckeye Alert system to send text messages to 32,000 students shortly before 9 a.m., asking them to stay away from certain buildings.
In addition to the library, McPherson, Scott and Smith laboratories were closed until further notice, university administrators said.
Video from the WBNS news chopper showed police taping off areas outside of the library. Officers with dogs were also in the area. Some were seen peering into the windows of parked vehicles.
According to university administrators, the FBI notified police of the threats shortly after 8 a.m. The buildings were then evacuated and closed as a precaution.
The FBI and the Columbus Division of Fire bomb squad were involved in the investigation.
Several campus-area streets were also closed. No injuries were reported.
The school scheduled an 11 a.m. news conference where authorities were expected to discuss the threats.