At least two crew members went missing after a lighter vessel sank in the Meghna River near Hatiya upazila of Noakhali on Wednesday night.
Bishwajit Barua, commanding officer at Hatiya Coast Guard Station, said the vessel -- Lovely 3 -- was heading towards Hatiya from the outer anchorage of Chittagong Port.
At one stage, the vessel developed a crack on its bottom and sank due to strong current.
Of the six crew members, four managed to swim ashore, he added.