
The deceased was identified as Siam, 14, a student of Mankon High School and son of Abdus Salam of Shibpur village in the upazila.
The incident occurred around 8:30pm on Thursday at a Baishakhi fair held on the grounds of Podur Bari High School.
According to police and family members, the altercation erupted between friends, which quickly escalated into a clash between two groups.
Officer-in-Charge of Muktagacha Police Station Quamrul Islam said Siam was attacked on the head with bamboo sticks and locally made weapons during the clash, leaving him critically injured, reports UNB.
He was initially taken to Mymensingh Medical College Hospital where he was referred to Dhaka. However, he died on the way.
Police said drives are underway to arrest those involved in the incident.