President Donald Trump blasted Elon Musk’s bid to start a new political party, as the intensifying feud between the former allies deepens concerns among investors over the implications for Tesla Inc.

Elon Musk escalated his public attacks on President Donald Trump Monday, suggesting his administration withheld findings about the federal investigation into Jeffrey Epstein, as their whirlwind friendship continues to devolve into a brutal back-and-forth on their respective social media platforms.