Bihar Chief Minister Nitish Kumar has accused Prime Minister Narendra Modi of demeaning the office of the PM.
In a blog post, the Janata Dal-United (JD-U) leader has said that the words Mr Modi was using in his election campaign were "low grade" and betrayed a "regressive mindset".
"I am surprised to see that the working of a prime minister can be so hollow and his thoughts could be so regressive," Mr Nitish Kumar said in his Facebook post.
"This nation has never had a prime minister who made religion their identity. So I am horrified when I see Modi publicly asking for votes on the basis of caste and religion. I feel like the sacred and glorious past of the nation are being tampered," Mr Nitish Kumar said.
Mr Nitish Kumar is the chief ministerial candidate of the 'Grand Alliance' of the JD-U, RJD and the Congress. The fourth round of voting for the Bihar assembly elections is due on 1st November.
