Stock exchanges have sought clarification on violation of disclosure norms by Adani Group entities regarding the alleged bribery case in the US and subsequent cancellation of Kenya's airport expansion deal.In its response to the case in the US, Adani Group firms on Thursday had said "there are no allegations made against the company".On clarification with regard to Kenya cancelling airport expansion and energy deals following the US bribery and fraud indictments, the group is yet to respond to the bourses.