The death toll rose to four as fire fighters rescued body of another child on Saturday afternoon after a trawler capsized in Turag river at Amin Bazar point.
Divers rescued the body of the boy around 3:45pm from the river, Dewan Azad, duty officer of Fire Service and Civil Defence Headquarters told The Daily Star.
Three still remain missing, he added.
Earlier, rescuers recovered body of two children and a woman, hours after the trawler, which was hit by a sand-laden cargo vessel, capsized in the river around 5:30 am in the Koilar Ghat area.
Divers of fire fighters started the rescue operation around 8:45am.
Later in the day, members of Coast Guard joined the drives.