At least 30 students of PM Shri High School in Tilmi, Jharkhand’s Khunti district, fell ill after returning from an educational trip, with several reporting vomiting, diarrhoea, high fever and stomach pain, officials said Monday.

The students from Karra block began developing symptoms on Sunday evening, with several more cases reported by Monday morning. A number of students were admitted to the Karra Community Health Centre for treatment.