hamilton college in clinton received bomb threat and threat of shooting at 9.45 am .
students and staff were urged to shelter in place , lock doors , draw curtains and stay away from windows .
suspicious package found in kirner-johnson building ; bomb squad arrived from albany to investigate .
a state trooper announced just before 12.40 pm there was no active shooter .
all classes at hamilton were canceled for the day .
suspicious package at kirner-johnson building was found to be harmless .