https://medium.com/bloomberg/criminal-probe-of-tesla-and-elon-musks-tweet-could-open-a-pandora-s-box-96835ba130a7

By Tom Schoenberg, Greg Farrell, and Matt Robinson

All it took to draw the U.S. Justice Department into investigating Tesla Inc. was a single tweet by Chairman Elon Musk. But now that prosecutors have a toehold, they can look for other signs of misconduct at the electric-car maker.