Three followers of Charmonai Pir drowned in a trawler capsize in the Arial Khan River in Barishal early on Wednesday.
One of the deceased was identified as Abdul Kuddus, 70, of Kabindipur in Sirajganj district.
Mohammad Ashraf, assistant sub-inspector of Barishal Sadar River Police Station, told the Daily Sun that five remained missing.
Of them, the bodies of three were found in the river in the morning while two others are still missing.
The rescue workers conducted a daylong operation in the river. They suspended the operation in the evening. The rescue operation will resume today, said the police officer.
The trawler is yet to be rescued, sources said.
Abdullah Al Mamun Titu, spokesperson the son of Charmonai Mahfil Committee, said that about 42 followers of Charmonai Pir from Sirajganj district were journeying by the trawler to attend the annual congregation in Barishal.
Most of the passengers of the trawler swam ashore. The injured are taking treatment at different hospitals, he said.