Earlier quoted context omitted.
Yes, that is the same as the Dwolla seizure. They had a Wells Fargo Business bank account linked to their Dwolla account. That is the 5 Million that was seized purportedly in connection to the investigation into Silk Road.
After looking it up, the seizure wasn't related to the Silk Road case. It was because MtGox wasn't properly registered as a money transmitter and was operating their accounts in the US under false pretenses [1]. I don't think it's necessarily possible to link the Dowalla event to Silk Road directly (which was the FBI, not DHS). [1] http://techcrunch.com/2013/05/16/mt-gox-dwolla-account-money...
http://techcrunch.com/2013/08/23/feds-seize-another-2-1-mill...