A line assistant of Northern Electricity Supply Company (NESCO) Limited was electrocuted while working in the sub-station in Hujrapur area of the district on Thursday.
The deceased was identified as Mizanur Rahman, 32, son of late freedom fighter Abdur Rahman Sardar of Atipara area of Ujirpur upazila in Barishal.
Mahfuzul Haque Chowdhury, inspector (investigation) of Chapainawabganj Sadar Model Police Station, said Mizanur was electrocuted while working in the sub-station around 3:30 pm.
His colleagues rescued him and took him to Chapainawabganj Zila Hospital where doctors declared Mizanur dead on arrival, added the inspector.
"The body was kept at the hospital morgue for autopsy," he said.
