About 17,250 BTC (~$89 million) was withdrawn from Bitfinex's bitcoin cold wallet at 6:35am GMT. The cold wallet still has a balance of 102,285 BTC (~$525.5 million) at the time of writing. It's not immediately clear whether the wallet where funds were transferred to is also owned by Bitfinex or whether it was triggered by Bitfinex's customers withdrawing their BTC to their private wallets. But based on the activity of the wallet, it appears to be processing withdrawals.
The withdrawal follows the news about New York State Attorney General (NYSAG) suing Bitfinex and the affiliated firm Tether. NYSAG claims that $850 million is still inaccessible to Bitfinex and that the firm has failed to publicly disclose the loss of funds. Tether posted an official response claiming that both Bitfinex and Tether are "financially strong" and that the "court filings were written in bad faith and are riddled with false assertions." Moreover, Tether said that the amounts "are not lost but have been, in fact, seized and safeguarded."