Keraniganj police detained four people, including the driver and master of MV Farhan-6, at night over trawler capsize in the River Dhaleshwari off the coast of Narayanganj Sadar upazila Wednesday morning.
Also, the launch was seized and brought to a dockyard in Kaliganj, Dhaka.
Earlier in the day, a trawler, with nearly 70 people on board, overturned as Dhaka-bound passenger launch MV Farhan-6, hit it near Dharmaganj in Fatulla.
At least 10 passengers, including four of the same family, remained missing till the suspension of the rescue operation in the evening.
Police detained four people, including the driver and master of Farhan-6, Babu Lal Baidya, said assistant director of the Bangladesh Inland Water Transport Authority in Narayanganj.
Rashed Bin Khaled, duty officer at the control room of Fire Service and Civil Defence, said the trawler with 60-70 passengers on board sank in the river after being hit by the vessel at 9:00am.
While many passengers managed to swim to safety, "at least 10 people are missing," he said.
"Five divers from the local fire service conducted rescue operations till evening."
Meanwhile, members of Bangladesh Coast Guard and River Police also joined the operation.
