Around $190 million in cryptocurrency has been lost and locked away somewhere online where no one can reach it. What’s to blame? CanADA’s largest cryptocurrency exchange, QuadrigaCX.

Back in December, the cryptocurrency exchange’s founder perished while in India. According to CoinDesk, a court filing states that the company does not have access to most of the funds, because the founder held the private keys. As of late-January, around 115,000 users have balances with the exchange.

The company announced it has filed for creditor protection but did not give full details as to why. Now, the filing itself gives answers. The company states that all the funds from the company were kept in offline, cold-storage wallets.

QuadrigaCX explained:

“For the past weeks, we have worked extensively to address our liquidity issues, which include attempting to locate and secure our very significant cryptocurrency reserves held in cold wallets, and that are required to satisfy customer cryptocurrency balances on deposit, as well as sourcing a financial institution to accept the bank drafts that are to be transferred to us. Unfortunately, these efforts have not been successful.”