MSNBC prime-time anchor Lawrence O'Donnell issued an apology for running with a single-sourced unverified claim about President Trump and Deutsche Bank.

"Last night I made an error in judgment by reporting an item about the president’s finances that didn’t go through our rigorous verification and standards process," he tweeted on Wednesday. "I shouldn’t have reported it and I was wrong to discuss it on the air. I will address the issue on my show tonight."

Last night I made an error in judgment by reporting an item about the president’s finances that didn’t go through our rigorous verification and standards process. I shouldn’t have reported it and I was wrong to discuss it on the air. I will address the issue on my show tonight. — Lawrence O'Donnell (@Lawrence) August 28, 2019

On his show the day before, O'Donnell claimed that a source close to the bank was in possession of "documents that Donald Trump obtained loans with co-signers" and that those co-signers were "Russian billionaires close to Vladimir Putin."

After issuing the report, the anchor concluded his show by reiterating that the story was from "a single source" and that it had not been confirmed by NBC News. Michael Del Moro, a producer for the network, tweeted on Wednesday that Deutsche Bank is "declining to comment" on O'Donnell's reporting and that the source had "not seen the bank records" in question.

The president's lawyers sent a letter to the network demanding an apology and a retraction for the story.