The Kane County Health Department currently is investigating the cause of an illness that inflicted both students and staff at Kaneland Community High School. Symptoms of the illness were reported to be primarily gastrointestinal in nature. Symptoms included nausea, vomiting and diarrhea. The cause of the illnesses is not currently known and is under investigation.

Nearly 20 percent of the student body reported symptoms on Wednesday and Thursday.

Classes were canceled at the high school Friday.

Preliminary indications are that the illness is short-lived and about 24 hours in length, according to a report by the Kane County Health Department.