The key parts (emph. mine):
According to Forbes, the investigation into elonmuskwhm is focused on that individual selling Bitcoin for cash, which is a violation of money laundering laws. The sale also constitutes an unlicensed money-transferring business. As part of the investigation, undercover agents reportedly sent links of YouTube tutorials that covered mapping via drones and augmented reality software to elonmuskwhm, and then asked Google to provide details on who had viewed the videos. The videos received more than 30,000 views.