The threats made on three locations in Marquette County today also mentioned Northern Michigan University and Marquette General Hospital.
Michigan State Police from the Negaunee Post say one of the bomb threat notes found elsewhere in the county today also mentioned NMU and MGH as potential targets.
Police say no explosives were found either at the university or at the hospital.
Bomb threats were made today at Sawyer International Airport, the vicinity of the Sawyer Village Shoppette at K.I. Sawyer and at North Star Academy in Marquette Township.