Washington (CNN) An FBI official said Wednesday the bureau has not found any evidence to back up a claim made by a conservative news organization and spread by President Donald Trump that Hillary Clinton's private email server was hacked by a Chinese-owned company.

"The FBI has not found any evidence the servers were compromised," the official told CNN and other media outlets Wednesday.

The Daily Caller reported late Tuesday that an unnamed Chinese firm operating in the Washington, DC, area hacked Clinton's private server and obtained "nearly all her emails." Trump quickly seized on the report to call on federal law enforcement to investigate the matter. The report that Trump was using cited two anonymous sources briefed on the matter, though Trump himself said hours later on Twitter that stories based on anonymous sources are "fiction."

In one tweet, the President also made light of Russia's attacks on the 2016 US election.

"Report just out: 'China hacked Hillary Clinton's private Email Server.' Are they sure it wasn't Russia (just kidding!)? What are the odds that the FBI and DOJ are right on top of this? Actually, a very big story. Much classified information!" Trump wrote Tuesday night.

Report just out: "China hacked Hillary Clinton's private Email Server." Are they sure it wasn't Russia (just kidding!)? What are the odds that the FBI and DOJ are right on top of this? Actually, a very big story. Much classified information! — Donald J. Trump (@realDonaldTrump) August 29, 2018

Hillary Clinton's Emails, many of which are Classified Information, got hacked by China. Next move better be by the FBI & DOJ or, after all of their other missteps (Comey, McCabe, Strzok, Page, Ohr, FISA, Dirty Dossier etc.), their credibility will be forever gone! — Donald J. Trump (@realDonaldTrump) August 29, 2018

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