The Bahamas police have arrested Sam Bankman-Fried, founder of the collapsed cryptocurrency exchange FTX, the country's attorney general has said, reports BBC.
He will appear in a magistrates court in The Bahamas on Tuesday, authorities in the Caribbean country said.
Police said Mr Bankman-Fried was arrested for "Financial Offences" against laws in the US and The Bahamas.
Last month FTX filed for bankruptcy in the US, leaving many users unable to withdraw their funds.
Mr Bankman-Fried will be held in custody "pursuant of our nation's Extradition Act," the Attorney General of the Bahamas said in a statement.
"Earlier this evening, Bahamian authorities arrested Samuel Bankman-Fried at the request of the US Government, based on a sealed indictment filed by the SDNY [Southern District of New York]. We expect to move to unseal the indictment in the morning and will have more to say at that time," the US Attorney's office in Manhattan said in a tweet.
Wall Street regulators also said that they would be taking action against Mr Bankman-Fried.
"We commend our law enforcement partners for working to secure the arrest of Mr Sam Bankman-Fried in the Bahamas on federal criminal charges," US Securities and Exchange Commission (SEC) official Gurbir Grewal said in a statement.
"The Securities and Exchange Commission has separately authorised charges relating to Mr. Bankman-Fried's violations of our securities laws, which will be filed publicly tomorrow in the Southern District of New York," he added.
Mr Bankman-Fried's lawyer did not immediately reply to a BBC request for comment.
FTX, the owner and operator of the FTX.COM cryptocurrency exchange, was founded in 2019 by Mr Bankman-Fried, a former Wall Street trader and ex-Google employee Gary Wang.
It became the second largest crypto exchange in the world, trading about $10bn (£8.15bn) of cryptocurrencies a day.
Mr Bankman-Fried was once viewed as a young version of legendary US investor Warren Buffett, and as recently as late October had a net worth estimated at more than $15bn.
He had become well known in Washington DC as a political donor, supposedly supporting pandemic prevention and improved crypto regulation.
But on 11 November FTX filed for bankruptcy protection after users pulled $6bn from the platform in three days and rival exchange Binance abandoned a rescue deal.
At the same time, Mr Bankman-Fried resigned as FTX's chief executive. According to a court filing last month, FTX owed its 50 largest creditors almost $3.1bn.
In a series of interviews and public appearances in recent weeks, Mr Bankman-Fried has acknowledged that mistakes were made at the firm but sought to distance himself from accusations of illegal activity.
"I didn't ever try to commit fraud," he said at the New York Times' Dealbook Summit at the end of last month.
The collapse of FTX came during a tumultuous year for the cryptocurrency industry. This year Bitcoin has lost more than 60% of its value, while other cryptocurrencies have also slumped.