The explanation has been sought by the National Human Rights Commission which cited media reports on the children.
The rights group said that the children's right to education and safety are being violated.
Last month, NDTV and other media reported that the children from a cluster of tribal villages in central Gujarat plunge every morning into a river, holding onto brass pots, to get to the other side, where the only school in the region is located.
Villagers have been demanding that a bridge be constructed.
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