A former FBI supervisory special agent has admitted to siphoning about $2.47 million in cryptocurrency from wallets the bureau had access to through its criminal investigations, using credentials he memorized from internal systems. Patrick Steven Yaroch, 37, pleaded guilty Thursday in federal court in Alexandria, Virginia, to wire fraud and money laundering, the Justice Department said.

Yaroch worked in the FBI’s Boston Division from 2017 until early this year, concentrating on investigations involving a foreign adversarial nation state, before moving to the bureau’s Counterintelligence and Espionage Division. That posting gave him access to FBI systems holding wallet credentials collected in active cases.

According to prosecutors, the…