The mishap took place as an overloaded country-made boat ferrying about 40 to 50 people on way to the riverine area in Vaishali district capsized in the river after colliding with another sand-laden boat, Senior Superintendent of Police (SSP) of Patna Manu Maharaj said.
There was no casualty in the incident as six persons comprising three women and as many children were rescued by the divers, while the remaining passengers swam to safety, the SSP said.
Meanwhile, local people alleged that at least two occupants of the ill-fated boat have been drowned.