At least 16 people have gone missing when a boat capsized at Koshi River in Prakashpur-5, Sunsari district on Tuesday.
Nepal Army personnel deployed at Koshi Wildlife Conservation Reserve, officials and Nepal Police are carrying search and rescue operation.
The boat was ferrying the persons to a village named Srilanka Island.
As per the preliminary report provided by the reserve warden Amar Nath Baral, five passengers in the ill-fated boat were female.
The water level in the river generally crosses the danger mark every year during the monsoon season with the local authorities urging the locals to maintain alert.