A total of 100 people have now been reported to have gotten ill from eating at Claudia Sanders Dinner House on Easter Sunday.
As the investigation continues, Renee Blair, director of the North Central Health District, said the restaurant will remain closed until the cause of the illnesses is found.
Currently, the only correlation between all of the victims is that they ate at Claudia Sanders that day. No specific food item has been identified, Blair said.
The symptoms of the illnesses include severe abdominal cramps, diarrhea, nausea and vomiting.