"Clearly, this is a matter of deep concern and we are working hard to rectify the matter in the coming days", the announcement said. "In addition to undertaking our own investigation, the incident has been reported to the relevant authorities and law enforcement and we are co-operating with them as a matter of urgency".
The company did not respond to requests for comment. We are now investigating the nature of the incident and, as a result, we are stopping all operations for the next 24 hours.
At 1:05 p.m. EST, Bitcoin was valued at $16,825, according to Coinbase, after briefly surging above $19,000 Thursday morning.
RT America looked into some of the users that claimed to have been affected by the hack and confirmed their money had been transferred to the mysterious bitcoin wallet address. Although bitcoin owners are usually anonymous, the amounts stored in their wallets are publicly searchable online.
Again, Man City grab late win, Bournemouth hold Southampton
David Moyes is still to register a win in four matches since taking over as manager of West Ham, which is in next-to-last place. The victory maintained City's eight-point lead over second-placed United ahead of next week's Manchester derby at Old Trafford.
Now that we are living in a world with the Bitcoin and other cryptocurrencies, it is looking likely that the way that we pay for goods and services are going to change fairly rapidly. Users can also buy computer processing power from other NiceHash users.
Cryptocurrency mining market NiceHash says it has fallen victim to a hacking attack that may have resulted in the loss of its entire Bitcoin wallet. But some users have chosen instead to keep their earnings on NiceHash. Others said their balances on the website went down to zero.
NEW YORK (AP) - The price of bitcoin swung wildly Thursday, rising to more than $19,000 only to fall sharply within minutes, as the frenzy surrounding the virtual currency escalated just days before it starts trading on a major USA exchange. As the outage protracted through the day, speculation swirled on social media that its digital wallet had been hacked.