https://www.siliconvalley.com/2019/03/18/sec-musks-tweet-was-a-blatant-violation-of-court-order/

A tweet about Tesla Inc production targets by Elon Musk was “a blatant violation” of a court order to get his written communications pre-approved, U.S. securities regulators told a judge on Monday, doubling down on the government’s demand to find the Tesla CEO in contempt of a previous fraud settlement.

The Securities and Exchange Commission wrote in a filing in federal court in Manhattan that Musk’s Feb. 19 tweet to his more than 24 million Twitter followers claiming the electric vehicle-maker would build around 500,000 cars in 2019 contained or could have contained information material to Tesla or its shareholders.