A hacker who stole about $83 million worth of XRP from global digital-asset exchange Bitget has moved the tokens to other wallets, CoinDesk reported. Because of XRP’s structure, Ripple is unable to freeze the holdings in the hacker’s possession.

CoinDesk reported on Sept. 26 that the Bitget hacker transferred about $83 million worth of XRP from three wallets to external addresses.

The problem is that Ripple cannot directly freeze assets that remain in the hacker’s wallet. The XRP Ledger allows companies and other issuers to freeze tokens they issue directly on the network. That function does not apply to XRP, the network’s native asset.

That means Ripple cannot forcibly move or freeze the stolen tokens as long as the hacker keeps the XRP in a private wallet. If the stolen XRP is sent to a centralized exchange, however, that exchange can restrict accounts linked to the hacker and block withdrawals.

Bitget estimates the total damage from the hack at about $387.5 million. The exchange said its protection fund can cover the losses, leaving customer assets unaffected. Bitcoin withdrawals are scheduled to resume on Sept. 28, Ether on Sept. 29 and Tether on Sept. 30, in sequence.