Elon Musk latest tweets face legal challenge

The US financial regulator has asked a New York judge to hold Tesla boss Elon Musk in contempt for violating a settlement over social media comments.

The move by the Securities and Exchange Commission (SEC) comes after he tweeted about the car firm's production.

Last year, Musk agreed that he would not make statements about Tesla's financial performance without prior agreement with the company.

That settlement followed his tweets in August about taking Tesla private.

There was no immediate comment from either Tesla or Musk on the SEC's move.

Tesla's share price fell 5% in after-hours trading on Wall Street.

Last week Musk posted an aerial picture of thousands of new Tesla vehicles and followed that by saying he expected the firm to make 500,000 cars in 2019.

In court papers filed in New York on Monday, the SEC said Musk did not get approval before publishing the tweet, which it said was inaccurate and in breach of Musk's agreement. The SEC noted that the tweet was disseminated to more than 24 million people.

"Musk has thus violated the Court's Final Judgment by engaging in the very conduct that the pre-approval provision of the Final Judgment was designed to prevent," the SEC wrote in its motion filed on Monday in federal court in Manhattan.

But Musk said the production numbers had been publicly revealed before in a call with financial analysts at the time of Tesla's fourth-quarter results.

He also refined the information in a further tweet to: "Meant to say annualized production rate at end of 2019 probably around 500k, ie 10k cars/week. Deliveries for the year still estimated to be about 400k." He also criticized the SEC for not reading the transcript of the analysts' call.

In media interviews, Musk said he often slept on a sofa in the Tesla office and in an online video he briefly smoked marijuana.

Musk said in an interview with news channel CBS that he has "no respect" for the SEC, but that he had chosen to pay the settlement fine because he believed in the justice system.