https://www.cnbc.com/2018/08/15/sec-has-reportedly-served-tesla-with-a-subpoena-after-elon-musks-take.html

The SEC has served Tesla with a subpoena after CEO Elon Musk tweeted that he was considering taking the company private and that he had the necessary funding lined up, according to a report by the New York Times published Wednesday.

Earlier reports said the agency had intensified scrutiny of the automaker after the controversial tweet. A subpoena would be one of the first steps in a formal inquiry.