The price of bitcoin dropped by more than $60 on Wednesday after China’s three largest bitcoin exchanges announced their suspension on bitcoin withdrawals would continue indefinitely.

OKCoin, Huobi and BTCC—the so-called China’s “Big 3” exchanges—announced a month ago that they would completely halt bitcoin and litecoin withdrawals on their respective platforms for 30 days while they improve their anti-money laundering capabilities to prevent “illegal transactions.” The upgrades were part of the requirements set by the People’s Bank of China, who called on digital currency operators to step up their game against anti-money laundering.

Their self-imposed deadlines are coming close, but the exchanges’ clients remain in the dark on when their services will resume. The reason? They exchanges still waiting for the go signal from Chinese authorities.

“Once we get approval from regulators, then we can carry out withdrawals,” the three exchanges said in separate, but identical statements. BTCC previously said its suspension would run for a month, from Feb. 15 to March 15.