Coinbase chief security officer Philip Martin has refuted suggestions the American crypto exchange was involved in any seizure of crypto assets related to the recent Colonial Pipeline ransomware attack.

Martin took to Twitter on Tuesday to explain the firm’s involvement, or lack of it, with the Department of Justice’s warrant for the seizure of Bitcoin.

“Coinbase was not the target of the warrant and did not receive the ransom or any part of the ransom at any point. We also have no evidence that the funds went through a Coinbase account/wallet.”

The official seizure story, in which government officials recovered 63.7 Bitcoin (BTC), worth roughly $2.3 million at the time, had a number of irregularities. Federal investigators claimed to have obtained the Darkside group’s private keys but did not disclose how the United States Federal Bureau of Investigation was able to commandeer them.

According to the affidavit, the private key for the subject address was in the possession of the FBI in the Northern District of California. This led to the connection with Coinbase, which has servers in the area as a number of Twitter users pointed out. Martin refuted these claims, stating:

“I’ve also read that because the seizure warrant specified property in the Northern District of California, it had to be targeted at Coinbase. Nope. What this likely means is that the private key is located at one of the many Northern California FBI field offices.”

He added that due to the exchange’s storage mechanisms, which use a pooled hot wallet, it “wouldn’t make a ton of sense” to hand over a specific private key.

Questioning how the investigators acquired the private key, he guessed that it was “some good ol’ fashioned police work to locate the target servers,” followed by a mutual legal assistance treaty request and/or some political pressure to get access.

Concerns arose over the abilities of authorities to access the cryptographic keys, which played a role in Tuesday’s market drop. However, authorities have a variety of innovative ways to access private information. On the same day, reports surfaced detailing a fake encrypted communications app used by criminals that was secretly operated by the FBI in order to surreptitiously collect messages, private information and monitor criminal activity on a massive scale.

In a newsletter on Tuesday, Mati Greenspan, founder of Quantum Economics and a former senior market analyst at eToro, stated that the recovered ransom was actually bullish for Bitcoin, as many had expected U.S. politicians to use crypto as a scapegoat for the attack and to enforce some heavy-handed regulations.

“Instead, they were clued in to what we already knew, that it is easier for authorities to catch criminals who use crypto than anything else.”

Greenspan added that the “only valid explanation for prices to be falling is that markets are random, especially in the short-term.” At the time of writing, BTC was trading down 2.2% over the past 24 hours at $33,000 after slumping over 10% since the beginning of the week.