A US secret service agent already convicted of stealing over $800,000 in Bitcoin during the Silk Road investigation is also suspected of lifting even more of the cryptocurrency from two other cases. According to the affidavit, the former agent is suspected of stealing roughly $700,000 from the secret service's account months after the agency was urged to block his access. Shaun Bridges pleaded guilty last year and was sentenced to almost six year years for the original theft.