HALIFAX -- The court-appointed monitor overseeing the search for the $260 million owed to clients of the QuadrigaCX cryptocurrency exchange says it recently found more than $900,000 in digital assets -- only to see more than half of it escape its grasp.

The bizarre turn of events was revealed Tuesday in the first court report submitted by Ernst and Young, which was appointed monitor Feb. 5 when the Nova Scotia Supreme Court granted the insolvent company protection from its creditors.

The report says the monitor learned last week that QuadrigaCX was holding $902,743 in Bitcoin, Litecoin and Ether cryptocurrencies in so-called hot wallets -- but something went wrong on Feb. 6.

Ernst and Young says QuadrigaCX "inadvertently" transferred 103 Bitcoins valued at $468,675 to so-called cold wallets, which the company is now unable to access.

"The monitor is working with management to retrieve this cryptocurrency from the various cold wallets, if possible," the report says. "The monitor has made arrangements to transfer the remaining cryptocurrency into a cold wallet which will be retained by the monitor."

About 115,000 QuadrigaCX customers are owed about $70 million in cash and $190 million in Bitcoin and other cryptocurrencies.

The Vancouver-based exchange was shut down Jan. 28, more than a month after its CEO and sole director -- Nova Scotia resident Gerald Cotten -- died while travelling in India, leaving his company without access to much of its cryptocurrency.

His widow, Jennifer Robertson, has said in court documents that Cotten was the only person with access to his laptop, which is thought to contain the digital keys to digital assets stored in cold wallets.

Cold wallets are typically offline storage devices protected by encryption technology. Cryptocurrency exchanges use them to store the bulk of their digital assets, which puts them beyond the reach of online hackers.

The hot wallets are online sites that store smaller amounts of cryptocurrencies, making them readily available for trading -- a practice akin to using a currency float in a cash register.

The latest twist in the QuadrigaCX case is sure to feed rampant online speculation about the company's dealings. Court documents have pointed to persistent rumours about Cotten's death and threats aimed at his widow, who lived with Cotten just outside of Halifax.

Aside from the cold wallet snafu, Ernst and Young also reported that there is more than one laptop at the centre of the case.

Electronic devices recently retrieved from an encryption expert working for QuadrigaCX include: two active laptops; two older model laptops; two active cellphones; two dead cellphones; and three encrypted USB flash drives.

"These devices are currently secure in a safety deposit box rented by the monitor," the report says. "In addition, the monitor was made aware of and took steps to retrieve Mr. Cotten's desktop computer from his home office at his residence in Nova Scotia."

Documents filed with the court last month, including an affidavit from Robertson, state that QuadrigaCX users were owed $180 million in cryptocurrency, but Ernst and Young says that figure is actually $190 million.