Hackers have apparently compromised a wallet belonging to billionaire investor Mark Cuban, stealing a number of cryptocurrencies, Bitcoin.com reports. The owner of the Dallas Mavericks NBA team, who confirmed the breach, has been able to transfer the remaining digital funds to U.S. crypto exchange Coinbase.

Cuban confirmed the hack of his wallet to the crypto news outlet DL News. “I went on Metamask for the first time in months. They must have been watching,” he said, adding: “I’m pretty sure I downloaded a version of Metamask with some shit in it.” The wallet crashed several times.

In a later transaction, around $2 million worth of USDC was also sent to a different wallet. Cuban revealed that he had transferred the remaining assets to Coinbase Custody. He also said that he locked his non-fungible tokens (NFTs) on Opensea and transferred all his polygon, too.