The deceased was identified as Shariful Islam, 30, a fisherman by profession and son of Abdul Hossain of Choto Choruigati village.
Lt Col Shahidul Islam, commanding officer of BGB-50 battalion, said that the incident took place around 11.45 am when a group of fishermen numbering 4-5 was fishing in Nagor river adjoining to the Indian border.
At one stage of fishing, they entered the Indian territory, 50 yards off Bangladesh border.
BSF members from Boro Billah camp in Uttar Dinajpur district of India opened fire on them , leaving Shariful dead on the spot.
Also read: Two Bangladeshis killed by BSF inside Indian territory
Other fishermen brought his body inside the Bangladesh border.
On information, BGB members and police recovered his body.
A letter has been sent to BSF protesting the incident.