Village headman Mpaso of Senior chief Chimaliro from where the children come from has confirmed, saying five children attempted to cross the river but one stayed back and reported the matter.
She says that one of the children reported that after reaching at the river, the four attempted to cross but the water swept them.
The chief further says that community members have so far managed to find some belongings such as, clothes and school bags for two children which have also been recognised by their parents.
Meanwhile, the chief added a search and rescue exercise is still underway and they have reported the occurrence to Nansadi police unit.
Police say they will comment later.