NORWALK - Norwalk school officials say two dozen students became sick after they ate lunch on Thursday.

Students started complaining of upset stomachs and vomiting. The students attend Naramake and Cranbury elementary schools, as well as Parkway Assembly of God and Side by Side Community School.

All of the schools use the same food service company, and the district says it is working with state health officials to determine the cause of the sickness.