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.

But after Musk announced over the weekend the formation of his planned third political party, the “America Party,” Trump seemed to feel less love or hate than pity. “I am saddened to watch Elon Musk go completely ‘off the rails,’ essentially becoming a TRAIN WRECK over the past five weeks,” Trump posted on Truth Social on Sunday.

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.