The Securities and Exchange Commission admonished Tesla and its CEO Elon Musk for violating terms of a 2019 settlement regarding the executive’s tweets.

The Wall Street Journal reports that the SEC rang alarm bells about two tweets, one on May 1 2020 and another from 2019 in which the CEO’s comments led to volatility in Tesla stock prices, saying that they had not been properly vetted by company lawyers, as was required.

Musk has to run all of his tweets past company lawyers following a 2018 tweet when he said that he would take Tesla private at $420 per share. Regulators accused the CEO of securities fraud for the tweet leading Musk and Tesla to pay $20 million each to settle the case. Musk also stepped down as chairman as part of the arrangement.

Read Also: Elon Musk Settles With SEC: Will Resign As Tesla Chairman, Pay $20 Million Fine

The communications were obtained via a Freedom of Information act submitted by the WSJ and highlight the tension between Tesla, Musk, and America’s top corporate regulators. In the communication, a senior SEC official, Steven Buchholz, wrote that “Tesla has abdicated the duties required of it by the court’s order.”

To be sure, Musk’s tweets have led to volatility in Tesla’s stock price. Musk’s infamous $420 tweet caused the automaker’s stock to soar, while the SEC pointed out that its market value dropped more than $13 billion following the May 2020 tweet, in which Musk said that Tesla’s stock price was “too high.”

Musk’s behavior on Twitter has shown few signs of change. Shortly after agreeing to the settlement with the SEC, the CEO mocked the organization, calling it the “Shortseller Enrichment Commission.” Lately, he has also been associated with the rising and falling prices of cryptocurrencies Bitcoin and Dogecoin.

In its communications with Tesla, the SEC asked the company to enforce controls in order “to prevent further shareholder harm.”