An attorney who made a name for himself by recovering valuable artwork looted by the Nazis during World War II has filed a lawsuit against the FBI, asking to see the basis for its controversial investigation into Democratic nominee Hillary Clinton just before the election.

E. Randol Schoenberg, who was played by Ryan Reynolds in the movie "Woman in Gold," wrote on Facebook on Dec. 7 that he is demanding to see the FBI's search warrant, citing the Freedom of Information Act.

"I filed a lawsuit today against the US Department of Justice seeking immediate disclosure of the FBI search warrant for the e-mails of Hillary Clinton and Huma Abedin on Anthony Weiner’s laptop," he wrote, reports Raw Story.

"I think we need to see what 'probable cause' was shown for obtaining the search warrant, because whoever thought there was going to be evidence of a crime was obviously mistaken," Schoenberg added. "And that mistake probably changed the outcome of the election."

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In a blog post written in November, Schoenberg suggested that people within the Trump campaign may have deliberately misled the FBI into reopening its investigation into Clinton, knowing all along that no new evidence would be discovered about her time as secretary of state.

"It does not seem too far-fetched to believe that politically-motivated individuals might have tried to get the FBI to re-open the investigation of Clinton by making false accusations," he wrote. "Finding Huma Abedin's emails on Weiner's laptop might have been just an opportunity to carry out their wishes."

According to Schoenberg, if his theory were to be proven true, it could spell serious trouble for President-elect Donald Trump.

"This is potentially very serious, something that if traced back to Donald Trump might even lead to impeachment," he wrote on his blog. "It deserves to be investigated fully and openly, and quickly, because if a crime was committed in the course of the FBI investigation, it is the crime of the century."

Echoing the notion that FBI Director James Comey had undue influence on the election is outgoing Democratic Senate Minority Leader Sen. Harry Reid of Nevada, who told Politico on Dec. 7 that if it weren't for Comey's interference, things would have turned out differently.

"[The Republicans] have Trump, I understand that. But I don’t think the Democratic Party is in that big of trouble," Reid told the news website. "I mean, if Comey kept his mouth shut, we would have picked up a couple more Senate seats and we probably would have elected Hillary."

Comey has always denied he was attempting to tilt the election in Trump's favor.