Who is responsible for the stampede that took place on the day of Mauni Amavasya in Mahakumbh?

There was a possibility of reaching 10 crore devotees on Mauni Amavasya in Mahakumbh. All claims of mob management were being made by the fair administration, but claims proved to be only claims. Negligence and Badintajami in mob management killed 30 devotees unmatched. Now the question is, who is responsible for the stampede in Mahakumbh?