More than 15 persons were admitted to different hospitals in Kodumudi on Thursday with symptoms of food poisoning.
It was said that the persons participated in a temple festival in Kolanalli village and ate the prasadham given by the temple authorities.
Later, they complained of nausea and were rushed to local hospitals.
Sources said the prasadham caused severe nausea and vomiting in some cases, and dysentery among the persons. Police are investigating the incident.