President Trump on Sunday doubled down on his refusal to concede the election to President-elect Joe Biden, even after suffering resounding court defeats over his election challenges and amid a growing popular-vote margin for the Democrat.

“He only won in the eyes of the FAKE NEWS MEDIA,” Trump said of Biden in a morning tweet, providing no evidence to back up his claim. “I concede NOTHING! We have a long way to go. This was a RIGGED ELECTION!”

The president’s declaration comes as he and his administration continue to falsely accuse Democrats of election fraud and impede the transition. It also follows an earlier Sunday morning tweet in which he appeared – if inadvertently – to acknowledge Biden’s win.

“He won because the Election was Rigged,” Trump said in the tweet. “NO VOTE WATCHERS OR OBSERVERS allowed, vote tabulated by a Radical Left privately owned company, Dominion, with a bad reputation & bum equipment that couldn’t even qualify for Texas (which I won by a lot!), the Fake & Silent Media, & more!”

As with his other accusations, Trump did not provide any evidence, and Twitter quickly flagged the tweet, noting that his “claim of election fraud is disputed.”

In remarks in Wilmington, Del., last week, Biden weighed in on Trump’s refusal to concede the race, denouncing the president’s actions and suggesting that Americans are “ready to unite.”

“Well, I just think it’s an embarrassment, quite frankly,” Biden said of Trump’s insistence that he won the race. Biden added that Trump’s actions “will not help the president’s legacy.”

Trump and his allies filed lawsuits in five key states. But rather than revealing fraud, the effort by Trump’s legal team has so far done the opposite: It has affirmed the integrity of the election. Nearly every GOP challenge has been tossed out, and not a single vote has been overturned.