KEY POINTS
  • Tesla revealed Friday that the Model X vehicle involved in a fatal crash last month had its Autopilot system activated.
  • The National Transportation Safety Board, the government agency investigating the crash, said on Sunday it was "unhappy" that Tesla made public information about the incident.

Tesla shares plunged after the company announced a large recall and revealed more details about a fatal Model X crash last month.

The company on Thursday announced a voluntary recall of 123,000 Model S vehicles because of an issue with a power steering component.