NiceHash: 4736 bitcoins was stolen by hacker

digital currency exchange NiceHash claimed that its 4600+ bitcoins were stolen by hacker, which is an amount worth more than $62 million at current prices, and these bitcoins were transferred to this address
it leads to NiceHash's Service Unavailable
here is this company's statement

数字货币交易所NiceHash宣布其4600多比特币被黑客窃取,黑客将这些比特币转移到coindesk,目前该交易所已暂停服务。