'Human error, not Chinese cyber attack', says Union Power Minister on Mumbai 2020 blackout By Amit Kumar | Updated: Mar 02, 2021 17:49 IST New Delhi [India], March 2 (ANI): Union Power Minister R K Singh on Tuesday said that Mumbai power outage of October 2020 was caused by "human error" and there is no evidence to prove that it was trigged due to a cyber attack by China. Speaking to ANI, Singh said, "Two teams investigated the power outage and reported that the outage was caused by human error and not due to cyber attack. One of the teams submitted that cyber attacks did happen but they were not linked to the Mumbai grid failure,"