A member of Border Guard Bangladesh (BGB) went missing in the Teesta River while chasing smugglers in Patgram upazila early Tuesday.
The victim was identified as Lance Nayek Sumon Hawladar, 42, son of Hekim Ali of Habiganj district.
Tipped off, a team of BGB men went to the bordering area near pillar No 144/3 in the upazila and chased a group of smugglers around 2:30 am, said commanding officer Lt Col Golam Morshed of Lalmonirhat BGB-15 Battalion.
At one stage, Sumon slipped into the river and went missing, he said.
A BGB rescue team launched a rescue operation to trace Sumon.
Latest News