The Securities and Exchange Commission leveled new charges, this time against a Virginia engineer, in a 2016 scheme to manipulate the stock prices of wearable technology company Fitbit that’s already resulted in a two-year prison sentence for one of the conspirators.

According to federal regulators, Mark Burns and Robert Murray, who pleaded guilty last year to parallel charges, orchestrated a scheme using falsified information filed through the SEC’s public Electronic Data Gathering, Analysis, and Retrieval system to trick investors into thinking a fictitious company was on the verge of buying premium Fitbit stock at a big markup.