"We got missing report about fishermen," said Kukrimukri Police Camp SI Nur Mohammad.
The actual number of missing fishermen is yet to be confirmed. Bhola's adjoining rivers Meghna and Tetulia were flowing above normal levels due to the effect of the tropical storm.
"People from remote and isolated sand banks being moved to safe locations," said Bhola's Deputy Commissioner Md Selim Reza
"A number of local voluntary organisations have been kept on alert to deal with the situation after the storm."
He added trawlers were instructed to move to safe locations.