New Delhi: Congress today questioned the "culpable silence" of Prime Minister Narendra Modi on the controversial remarks by Union Minister Sadhvi Niranjan Jyoti and suspected a political motive behind her utterances ahead of Delhi assembly polls.

"What is Narendra Modi's stand on this? Why has he not condemned it so far? Before this, Giriraj Singh had also said such things and he was made a minister. Why is he (Modi) quiet? The issue is not only these two. "The issue is the culpable silence of the Prime Minister within and outside Parliament on it," party spokesperson Abhishek Singhvi told reporters here.