Saharsa, Nov 21 (UNI) Bihar Chief Minister Nitish Kumar today said the sustained efforts of his government to improve the lot of extremely backwards had started yielding results as their condition witnessed changing with accelerated pace and no one can challenge them now.

Mr Kumar, while addressing a function organised here, said his government was working on principle of development with justice to all sections of society and lot of efforts had been made to improve the condition of extremely backwards. They were left behind on path of development but efforts of his government had started changing their lives, he added.