CALIFORNIA - Billionaire Elon Musk is reportedly facing another trouble a month after his former girlfriend Amber Heard lost defamation trial against Johnny Depp. According to the Reuters, fifteen Black former or current employees at Elon Musk company Tesla filed a lawsuit against the electric car maker recently, alleging they were subjected to racial abuse and harassment at its factories.

The workers said they were subjected to offensive racist comments and behaviour by colleagues, managers, and human resources employees on a regular basis, according to the lawsuit filed in a California state court. Tesla did not immediately respond to a Reuters request for comment. It previously had denied wrongdoing and says it has policies in place to prevent and address workplace misconduct.

Earlier in June, a Tesla shareholder filed a lawsuit accusing CEO Elon Musk and the company’s board of directors of neglecting worker complaints and fostering a toxic workplace culture. The lawsuit has been filed against Musk’s company nearly a month after the Pirates of the Caribbean actor won defamation case against Heard.