Tesla boss Elon Musk pushed the price of Bitcoin below the $ 45,000 mark with a tweet on Sunday.
That is the lowest level since February.
The entrepreneur indicated that his group could sell its Bitcoin portfolio.
A Twitter user had written that Bitcoin owners would be annoyed in the coming quarter if it was found that Tesla had sold the rest of its Bitcoins.
One could not blame Musk for this in view of the hatred that met him, it was said.
Musk responded by saying, "Indeed."
It was initially unclear whether the company actually sold its holdings or whether Musk was referring to the criticism of him from the Bitcoin scene.
Regardless of the ambiguity, the Bitcoin price fell significantly.
Criticism of the environmental balance of Bitcoin
Tesla announced last week that it would not accept Bitcoins as a means of payment.
The group made the decision because of the rapidly increasing consumption of fossil fuels for the production of and transactions with Bitcoins, Musk said on Wednesday.
Above all, the fact that a lot of coal energy is used for this is worrying.
This announcement also caused the Bitcoin price to drop suddenly by thousands of dollars.
Musk stressed last week that he did not want to sell Tesla's Bitcoin holdings.
Musk also made it clear that he basically remains an advocate of the industry: "Cryptocurrency is a good idea on many levels and we believe in a promising future, but this cannot be at the expense of the environment," he said in his statement. Tesla had only started accepting bitcoins to buy electric cars in March. The group had previously announced an investment in Bitcoins for $ 1.5 billion, giving the oldest and best-known cyber currency a significant boost.