Expressing grave concern over the reports about manufacturing of “synthetic” milk emanating from various parts of the states close to the national capital, where supply of such milk could not be ruled out, the Supreme Court on Wednesday issued notices to the Centre and six states seeking reports on the issue.

A bench of Chief Justice of India S.H. Kapaidia and Justices A.K. Patnaik and Swatanter Kumar issued the notices to the Centre and states of Delhi, Uttar Pradesh, Rajasthan, Punjab, Haryana and Uttarakhand asking them to file affidavits specifying action taken by them to check the supply of spurious milk and milk products within four weeks.