What is more surprising in this news is not that the government was able to trace these transactions even after the police officer's efforts to eliminate the trace (I suppose that he made a mistake at some point) but the fact that the delinquent was a policeman. I want to believe that most police officers carry out their obligations with due diligence and, although we all know of cases in which the behavior of some departs far from what would be desirable, it is the exception and not the norm.
But, apart from the surprising figure of the protagonist in this story, this should serve as a "notice to mariners" who might be considering using Bitcoin to cover up their shady activities.