The FBI has made contact with victims of the QuadrigaCX cryptocurrency exchange saga, a sign that its ongoing investigation is taking shape, CoinDesk reports.

Correspondence published by the outlet reveal that an FBI victim specialist has emailed former QuadrigaCX users, directing them to an online portal they can use to obtain more information.

“As a Victim Specialist with the FBI – Albany, I’m contacting you because we have identified you as a possible victim of a crime,” Valerie Gauthier wrote one QuadrigaCX user, before confirming that the FBI is on the case.

“The enclosed brochure introduces you to the FBI‘s Victim Assistance Program and the types of assistance that may be available to you,” she continued.