It has been confirmed by the Sikkim authorities in a press conference. This exact amount of theft will not be known until the officials did a detailed investigation.
This Was the Largest Cryptocurrency Exchange Hack in History
Nikkei VERITAS has tweeted with the conference, and during the hack, these hackers escaped with $ 530 million worth of more than $ 5 million. This story is constantly evolving, but whatever we know here is so far. It is believed that this is the largest exchange theft ever made. Its official Tokyo-based cryptocurrency exchange coin check was hacked.
Source - https://www.ccn.com/biggest-theft-history-know-far-530-million-coincheck-hack/