India’s Enforcement Directorate (ED), the agency responsible for financial crimes, is looking at cryptocurrency exchanges suspected of processing transactions that sent more than 10 billion rupees, or about $130 million, from firms under investigation to international wallets. At least ten crypto exchanges are allegedly involved, according to an official who spoke to The Economic Times, and bank accounts of exchange WazirX have been frozen, the newspaper reported.

Transactions of up to 1 billion rupees, or $1.3 million, were allegedly made in the names of people with no connections to the money by companies under investigation in a case involving instant loans. Thes companies often had ties to China. Even though Know Your Customer/Anti-Money Laundering (KYC/AML) procedures showed the transactions to be suspicious, no enhanced due diligence was performed and no suspicious transaction reports were filed with the ED, the agency claimed.

Related: Crypto tax deters 83% Indian investors from crypto trading: WazirX report

The ED froze WazirX bank accounts, containing about 647 million rupees or $8.1 million last week, alleging that the exchange had assisted about 16 fintech companies under investigation for money laundering. WazirX released a statement on its blog Tuesday “on behalf of Zanmai Labs Pvt. Ltd,” which, it said, co-operates with WazirX along with Binance, saying that all users are subject to KYC/AML processes and the exchange cooperates fully with law enforcement. “For every transaction, we are able to produce the KYC details of the relevant user,” the blog post said.

The accusations against WazirX have drawn attention to its opaque ownership structure and the role Binance plays in it. Binance CEO Changpeng Zhao (CZ)