ROCKFORD, Mich. (WZZM) -- There was a large police presence at Rockford Schools Friday morning following an anonymous bomb threat, Michigan State Police said.
Rockford Superintendent Michael Shibler told WZZM 13 he personally received an e-mail at 10 a.m. that included a bomb threat against all 13 school buildings in the district. He immediately notified Rockford Police, the Kent County Sheriff's Department, and Michigan State Police.
Principals, teachers, and maintenance staff at all the schools immediately checked the buildings, inside and out for anything unusual. Nothing was found. Police with canines then swept through each building in the district, as a precaution.
The U.S. Department of Homeland Security is now involved in the investigation and is working to trace the e-mail source of the threat.