(Reuters) -Justin Sun, one of the biggest known backers of President Donald Trump's World Liberty Financial crypto venture, said on Friday that his tokens had been frozen, without giving further details.

Sun had spent at least $75 million on World Liberty Financial tokens, known as $WLFI, according to his posts on X. The tokens became publicly tradable on Monday and fell in value.

In a post on X addressed to "the World Liberty Financials team", Sun said: "during the course of operations, my tokens were unreasonably frozen" and asked the team to unlock them.

China-born crypto entrepreneur Sun did not specify what the operations were, how many tokens were frozen or who had frozen them.

A spokesperson for World Liberty Financial did not immediately respond to a request for comment outside U.S. business hours.

"Tokens are sacred and inviolable-this should be the most basic value of any blockchain. It's also what makes us stronger and more fair than traditional finance," Sun said on X.

"I call on the team to respect these principles, unlock my tokens, and let's move forward together toward the success of World Liberty Financials."

Sun did not respond to a message from Reuters asking for more information.

World Liberty had previously said that early investors would be able to sell up to 20% of their token holdings.

The tokens were trading at around 19 cents on Friday, according to CoinGecko, having initially traded above 30 cents at their debut.

Reuters reported in February that the U.S. Securities and Exchange Commission is exploring a resolution to its civil fraud case against Sun.