NINGBO - Fifty-eight middle school students were hospitalized over possible food poisoning in East China's Zhejiang province on Tuesday, local authorities confirmed Friday.

All 58 victims from Yucai Middle School in the city of Cixi have been discharged from hospital and returned to school, ?according to the Cixi municipal government.

After eating chicken provided by the school cafeteria, many students showed symptoms of vomiting and diarrhea and were sent to a local hospital, according to microblog posts.

Local authorities are still investigating the incident.

The city has launched a special inspection of school cafeterias to guarantee food safety.