Tesla CEO Elon Musk is threatening to pull the company’s factory and headquarters out of California in an escalating spat with local officials over reopening an electric vehicle plant.

On Twitter Saturday afternoon, Musk also threatened to sue over Health Department coronavirus restrictions that have stopped Tesla from restarting production at its factory in Fremont south of San Francisco.

Musk wrote that the restrictions are the final straw and that Tesla will move its headquarters and future programs to Texas or Nevada. On Friday, the Alameda County Public Health Department said it told Tesla that it did not meet conditions for a business to reopen. Messages were left Saturday seeking comment from state and local officials.