The report also finds that environmental issues cause 5.2 billion days of illness annually and cost the equivalent of 17.6 percent of the country's GDP in 2019
The deceased was identified as 32-year-old Md Mohiuddin who was well known in the Halishahar neighbourhood in the port city.
The incident occurred in Meher Afroze High School in Saltgola area on Monday afternoon, said Inspector Moinul Islam of Bandar Police Station.
“Mohiuddin went to attend a meeting to form a committee with former students of the school to organise a reunion,” OC Moinul told bdnews24.com.
Followers of Haji Iqbal, a local influential leader, attacked him with sharp weapons and stabbed him indiscriminately, he said.
Critically injured, Mohiuddin was taken to the Chittagong Medical College Hospital where doctors declared him dead.