In May, Dwolla, the Des Moines, Iowa, payments innovator, was hit with a court order that said there was probable cause to believe Bitcoin virtual currency exchange and Dwolla client Mt.Gox was operating as an unlicensed money transmitting business.

Now tech publication Gigaom has dug up the paperwork showing that the Department of Homeland Security around that time also seized a $2.9 million Dwolla account held by Mt.Gox subsidiary Mutum Sigillum.

That account was maintained at Veridian Credit Union, a $2.4 billion institution in Waterloo, Iowa. Veridian has deep roots with Dwolla. In 2010 the person-to-person payments specialist got startup money by way of a million-dollar investment from two CUSOs: The Members Group and The Veridian Group.

The seizure warrant was issued and executed on May 14, although news of the seizure only now has surfaced.

What will happen to the seized funds is uncertain.

Dwolla has declined to comment on the seizure.

Mt.Gox, which bills itself as the world’s largest Bitcoin exchange, had not responded to a request for comment.